TV Shows like Merlin!?

Common Law

Leverage

Sherlock

Firefly

Human Target

Veronica Mars

Chuck

Stargate: SG-1

Stargate: Atlantis

Dirk Gently

Doctor Who

Primeval

Warehouse 13

Sanctuary

Teen Wolf

Lost Girl

Buffy the Vampire Slayer

Legend of the Seeker

Pushing Daisies

These are the ones I could think of. It starts out with just action and comedy. Then Action comedy with sci-fi theme and ends with action comedy with supernatural aspects (magic and what not).

Hope it helps =).

I'm a Merlinian as well. These programmes are not necessarily like it, they are just ones I like

Sherlock

Miranda

Death In Paradise (BBC)

NCIS

Doctor Who

Privates

I adore merlin, shame it ended :(

here are a few:

Firefly http://en.wikipedia.org/wiki/Firefly_(TV_series)

Camelot http://en.wikipedia.org/wiki/Camelot_(TV_series)

Lost Girl http://en.wikipedia.org/wiki/Lost_Girl_(TV_series)

Charmed http://en.wikipedia.org/wiki/Charmed

Angel http://en.wikipedia.org/wiki/Angel_(TV_series)

GAME OF THRONES!!!