Good anime...let me some mecha ones are
Robotech: the macross saga
Gundam (listed by others)
Big O (alrite)
Guyver ( not Mcguyver lol)
Patlabor the series
Some good fantasy ones
Anything by "Hayao Miyazaki" (Princess mononoke, Castle in the sky etc.
http://en.wikipedia.org/wiki/Hayao_Miyazaki#Films)
Ranma (more love drama)
Blue Seed ( pretty good)
Akira (classic, dont think fantasy though)
And some random ones that i can barly remember..
New dominion tank police
Gunsmith cats
Iria
Ronin Warriors (yes it was an anime and a good one)
Fooly Cooly
Bleach
Blue Gender