I need some ideas of good sci-fi novels as my brother doesn't seem to like anything else. Any suggestions?

Dune has to be the greatest Sci Fi book of all time! It has great action, and an absorbing story!

Or he can try I am Legend. Much different than the movie, and is very intense. You cant go wrong with these two books, trust me! Or he can check out my book War World. http://www.lulu.com/spotlight/pmalloy14

Crashlander and Flatlander are collections of short stories and novelettes by Larry Niven.

He is a great writer and writes the type of science fiction your brother will like.

Tales of Known Space is another good collection by Niven. All short stories of adventure and discovery and aliens and the like.

In SCIENCE FICTION, here are some I (Fittings Doc) would recommend:

"Foundation" (1951 / 255 pages) by Issac Asimov

(the first book of the "Foundation Series")

Postulates the societal change, which would accompany the expansion into the stars.

The series won the one-time Hugo Award for "Best All-Time Series" in 1966.

(One of the other books in the series also won a Hugo Award.)

“Dune” (1965 / 412 pages) by Frank Herbert

(the first book of the “Dune Series)

(Won the Hugo and Nebula Awards.)

"Dorsai" (1959 / 159 pages) by Gordon R. Dickson

(the first book of “The Childe Cycle”)

Deals with genetic drift and specialization, and there effects on humanity as a whole.

(Nominated for the Hugo Award.)

“I, Robot” (1950 / 272 pages) the book of early short stories by Issac Asimov on the subject of ROBOTS in which he postulates the "Three Laws of Robotics" should be read as a basis before reading the

"The Caves of Steel" (1954 / 224 pages) by Issac Asimov

(the first of the "Robot" series / Lije Bailey mysteries)

These books are the source from which the movie "I, Robot" is drawn.

"The Forever War" (1974 / 236 pages) by Joe Haldeman

Deals with the effect of time dilation, on those involved in an interstellar war.

(Won the Hugo and Nebula Awards.)

"Warriors Apprentice" (1986 / 312 pages) by Lois McMaster Bujold

(the first book of "The Vorkosigan Saga")

After being genetically "damaged" by a bio weapon in his mother's womb, Miles Vorkosigan overcomes prejudice to claim his birthright.

(FOUR other books in the series Won Hugo Awards.)

"On Basilisk Station” (1993 / 448 pages) by David Weber

(the first book in the "Honor Harrington" series)

This Space Navy series has FEMALE lead character. Beyond the Technology of the spacecraft and weapons, the story revolves around interpersonal relationships with which you will be able to identify.

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"The Cross Time Engineer" (1993) by Leo Frankowski

(first book of the "Cross Time Engineer" / "Conrad Stargard" series)

Twentieth-century Polish-American engineer Conrad Schwartz is accidentally and mysteriously dumped in thirteenth-century Poland. (Just before the Mongol invasion of 1241.)

"The Forge" (1991) by S.M. Stirling.

(the first book of "The General" series)

A military officer discovers "Battle Central", an ancient 1000 year old computer, that shows him what will happen to the planet without intervention.

"An Oblique Approach" (1998) by Eric Flint

(the first book of the "Belisarius" series)

Belisarius, a Greek era general, is aided by a Crystalline based intelligence sent back in time to defeat a plot headed up by a computer based AI sent by disgruntled humans (political losers in the far future) intent on the molding of humanity.

"Sten" (1982) by Chris Bunch and Allen Cole

(the first book of "The Sten Chronicles")

Sten is orphaned and then recruited into the Eternal Emperor's "Mantis" covert intelligence corps.

“The Man Who Never Missed" (1985) by Steve Perry

(the first book of "The Matador" series)

"The Regiment" (1987) by John Dalmas

(the first book of "The Regiment" series)

"The White Regiment" (1987) by John Dalmas

"The Regiment: A Trilogy" (omnibus of "The Regiment", "The White Regiment" and "The Regiment's War"), (2004 / 724 pages) by John Dalmas The planet Tyss has only one resource: soldiers.

They train the White Regiment from children of a non agressive planet who tend to see "war as play".

“Prince of Mercenaries” (1989) by Jerry Pournelle

(the first book of the “The Falkenberg's Legion” series)

“The Ayes of Texas” (1982) by Daniel Da Cruz

(the first book of the “Republic of Texas” series)

About commercial space exploration.

In FANTASY here are some I (Fittings Doc) would recommend:

"Legend” (1984) by David Gemmell (The MASTER of Heroic fantasy)

(first book of the “Drenai Saga”)

Hell EVERYTHING by David Gemmell is worth reading!!!

He is a master at character development and readability.

If you like HEROIC FANTASY, You’ll find you cannot put his books down.

"The Hobbit" (1937 / 310 pages) by J. R. R. Tolkien

At the suggestion of the wizard Gandalf, Bilbo Baggins helps some dwarves steal treasure back from a dragon. The PRECURSOR to "The Lord of the Rings"

"The Dark Tide" (1984) by Dennis L. McKiernan

(first book of the "Mithgar" series)

"The Iron Tower" (an omnibus edition)

Originally published as a trilogy (The Dark Tide, Shadows of Doom, and The Darkest Day).

“The Crystal Shard" (1988) by R.A. Salvatore.

(the first book of "The Icewind Dale Trilogy")

"Pawn of Prophecy" (1982) by David Eddings

(first book of the "Belgariad" series)

"The Misplaced Legion" (1987) by Harry Turtledove

(first book of the "Videssos" series)

One of Julius Caesar's legions is transported to a world with magic.

“The Gilded Chain” (1998) by Dave Duncan

(first book of the “Tales of the King's Blades” series)

Eragon maybe.