No way man, the Snes emulator isn't bad at all! It's not going to give you a faithful representation like, say, a Snes emu on the PC, but there's still lots of games that play really well on it. (I'll always be the first to say "it's not perfect or close to it" but there's no denying that there's tons of fun to be had). If you don't mind overclocking (eats up more batteries, if you can actually do it) then you can get some good results. There's tons of games being promoted around the archives of this forum, do some searching - real quick, here's what i enjoy:
Tetris Attack, QBert 3, Simcity, Rtype 3, On The Ball, Super Punchout, Rampart, Front Mission (with Translation Patch). Someone is translating Super Famicom Wars as well (descendant of Advance Wars) so I bet that will play really well when it gets finished up too (it'll be a few months yet..)
you're missing out ton a lot of fun arcade-style games if you've not got into GPengine yet, there's lots of 16-bit-looking games that run fullspeed on there.. you got Rtype, vigilante, legendary axe, galaga 88, Volfied, Gomola Speed, Devil's Crush, Klax, Military Madness, Mr heli, Shinobi.
Coleco Emulator has tons of early 80s game ports, the system is old but lots of gems in there too - much better gfx than the 2600 and intellivision ports of the time (still, I am holding out for Mame to satisfy that urge, but this is a nice substitute for the meantime)