ghost of idiot kid but honestly? youve got the three songs anyone will ever bring up.
they're just kind of a solid band that have a weird rabid fanbase really.
buuuut you're also lazy as fuck jesus christ and this topic is like wandering into videogames and saying DOSE ANYONE KNOW ANYTHING ABOUT KILLZONE??? WHAT PLATFORM IS IT ON.
by which i mean if you had used wikipedia even once you would notice TMBG has released eight compilation albums:
Don't Let's Start · Miscellaneous T · Then: The Earlier Years · Best of the Early Years · They Got Lost · Dial-A-Song: 20 Years of They Might Be Giants · A User's Guide to They Might Be Giants · Venue Songs DVD/CD
JUST A THOUGHT man and if this was anyone else I'd think you were asking WHICH compilation best defined them but you are Eric and admitted to listening to basically three songs so just get one of those and next time don't lie about having looked for a greatest hits collection from a band that actually released THIS:
http://en.wikipedia.org/wiki/A_User's_Guide_to_They_Might_Be_GiantsWITH A NOTE: "It is a very interesting introduction to the band.
If you were looking for a single disc to lay on the uninitiated, this might be the one."
jesus man.