For readers roughly between the ages of 19-30 for whom the eight-bit holds a significant place in their hearts, I link to the pseudononymous Angry Video Game Nerd. If you weren't raised on the NES, however, you won't get much from watching him.
He tackles several awful games and gets them right across the board--including his praise for DuckTales, which, despite sounding as though it'd be a monstrosity, was actually a blast--but he knocks the -quels out of the park. The high expectations created by the first in a series coupled with the slimmer budgets and shoddier construction of those that follow (which are generally pushed out as a way of milking a moribund cash cow) tees the Nerd up beautifully.
The Double Dragon III and Castlevania II reviews are my personal favorites, if you want a quick flavor of this wacky guy's creations. The wit and wackiness aside, I could've written the narrations for these two myself (minus the four-letter vulgarity that could be done without). The two-part series on the monumental disappoinment that is TMNT III (the movie) is entertaining as well.