Weird egg looking thingys on filter after buying live plants.?

They certainly look like angelfish eggs. If a female has no mate she will still lay the eggs, just as a hen will lay eggs even if there is no rooster around. In some rare cases female cichlids have fertilized their own eggs, but this oddity is still unknown in angelfish which are a cichlid species too.

Eventually the infertile eggs will turn white and then get covered with fungus or fall apart. The female angelfish may spend some time trying to care for the eggs until that happens, fanning them and picking dirt off them.

One of the plants looks like Aglaonema simplex, a shade loving terrarium plant that will grow with its roots in the edge of a pond but its leaves must be above water since it can only survive temporary flooding. It is sometimes sold as "Brazilian Sword", a fake name.

Anubias heterophylla has a similar leaf, but it is very leathery and tough and comes from a thick sturdy horizontal rhizome that should be attached to driftwood or a rock and not buried in sand or gravel which usually kills the plant. It is amphibious, tolerating long periods of submersion and even growing and blooming underwater with small white calla type flowers.

Another plant looks like Bacopa monniera, a true aquatic. It is long and leggy in your photo, usually a result of low light. The pinkish plant could be another Bacopa cultivar or a hybrid. Mixing real and plastic plants is fine. Sometimes the plastic ones get algae on them. Some look close to real and others are artistic.

Then there is your baby tears, usually an easy plant to grow underwater.

I actually think those are Angelfish eggs! If you have a lone female you do not need to worry about them hatching, and she will eat them in time. If you got snails into your tank chances are they are either malaysian trumpet snails, pond snails, or ramshorn snails. The MTS are livebearers, and Pond and Ramshorn snails eggs look like this

http://www.planetinverts.com/pondsnaileggs.jpg

This, on the other hand, is an example of what Angelfish eggs look like

http://www.fishyreview.com/img/counting/1270-eggs_...

Those are for sure not snail eggs! Looks like you will have some fry!