I heard Silver Surfer was damn near impossible
basically my "list" is
Mega Man 2, Mega Man 3, Legend of Zelda 2, Final Fantasy, Rampage, Batman, Captain America and the Avengers which I went out and bought this week
And then I'll likely get Tetris, Dr. Mario, Paperboy, Double Dragon, RCA Racers, Bubble Bobble 1&2, Adventure Land, Little Nemo, Mike Tysons Punch Out, and Monopoly throughout the year.
And if you have any extra suggestions cool. Some are just way to expensive (Contra, Zombie Invasion).