Your suggestions?

[Bocko91]

I recently got my hands on an NES but all I have for it is Rad Racer and Mario Bros./Duck Hunt. I can't find my collection of NES games from when I was a kid.  :(

In your opinion, what are some must-have NES games?  ;)

All I know of is:
-Super Mario Bros. 3
-LoZ

[DSWiiMaster42]

Get Super Mario Bros. 3, Legend of Zelda, Megaman, Metroid, and Kirby's Adventure.

[extraz]

Donkey Kong
Donkey Kong Jr. (there is a game called Donkey Kong Classics, has these 2 in one)
Mario Bros.
Super Mario bros. 2
Super Mario Bros. 3
Adventure Island 1-3
Akanoid (don't bother with the special controller, it breaks easy)
Balloon Fight
Bionic Commando
Boy and His Blob
Bubble Bobble
Castlevanica 1-3
Contra
Super C
Double Dragon 1-3
Dr. Mario
Tetris (try to get the "Tengen" variety)
Excitebike
Gauntlet
Gradius
Joust
Defender II
Kid Icarus
Ice Climber
The Legend of Zelda 1-2
Mach Rider
Manicac Mansion
Marble Madness
Blaster Master
Megaman 1-6 (2 and 3 are considered the best of them)
Metal Gear
Metroid (try to get the one with the yellow label)
Punch Out!! (try to get the Mike Tyson version)
Pac Man
Narc
Ninja Gaiden 1-3
Paperboy
Q Bert
Rampage
River City Ransom
Super Spy Hunter
TMNT II-III
Rad Racer II

[Bocko91]

That's a... thorough... list. :D

I'll see what I can find.
Thanks ;)

[RedYoshi]

Donkey Kong
Donkey Kong Jr. (there is a game called Donkey Kong Classics, has these 2 in one)
Mario Bros.
Super Mario bros. 2
Super Mario Bros. 3
Adventure Island 1-3
Akanoid (don't bother with the special controller, it breaks easy)
Balloon Fight
Bionic Commando
Boy and His Blob
Bubble Bobble
Castlevanica 1-3
Contra
Super C
Double Dragon 1-3
Dr. Mario
Tetris (try to get the "Tengen" variety)
Excitebike
Gauntlet
Gradius
Joust
Defender II
Kid Icarus
Ice Climber
The Legend of Zelda 1-2
Mach Rider
Manicac Mansion
Marble Madness
Blaster Master
Megaman 1-6 (2 and 3 are considered the best of them)
Metal Gear
Metroid (try to get the one with the yellow label)
Punch Out!! (try to get the Mike Tyson version)
Pac Man
Narc
Ninja Gaiden 1-3
Paperboy
Q Bert
Rampage
River City Ransom
Super Spy Hunter
TMNT II-III
Rad Racer II

Yup, that's all the classics right there! ;)

[Shujinco2]

Loz
Loz II
Kirby's adventure
Super Mario Bros
Super Mario Bros 3
Mother

[DistantWords]

Startropics 1 & 2 were really good.
I would DIE to get my hands on Crystalis again...