I have to admit that I've never been a big fan of the advantage but I remember playing Track and Field II and Excitebike with it way back in the day.  I never owned one until Toys R Us was selling them for $ 2 each like 5 or 6 years ago.  What games do you play with your advantage?

I use the NES Advantage to play all SMB 1,2,3, Galaga, Rush N Attack, Zelda 1 & 2 and the list goes on and on.  

Contra ... I wonder why this did not kill the Advantage until today.

I use it for shooters like Life Force and Silver Surfer, and for some reason I like to use it for TMNT.  I love the Advantage, it's a great controller... gives a nice arcade-type feel :)

I always use the advantage, some ppl don't like to use but i use it at any time.
Indeed the arcade styule playing attracks me to use it.

Marble Madness, it's so much easier than mashing diagonals on the d-pad, my thumb gets tired!

Thumbs up for Galaga and Pac Mania

I play alot of games with the NES Advantage:

Mega Man
Mega Man 2
Code Name:Viper

And I don't really know what other games I used, but I know those weren't the only ones. I did play it with "Metal Gear" a couple of times.

I use it pretty much for everything, but I've found it isn't great for puzzle games (especially Dr. Mario).