My faves are: Mike Tyson's Punch Out!!
Can you drop Don Flamenco in less than 14.97 seconds? (that's the in game clock, btw)
or how about
Super Mario Bros. in under 5 minutes. And if you say the warp zones are cheating, try to beat every level in 18:58 or less.
Here's Super Mario Bros. 2 (J)
Thursday, February 17, 2005