i feel that way a lot as well. Especially when i beat a zelda game, most notably with Majora's Mask last month or so (The first zelda I beat in almost a year, and second to last I have left.) Now, I have Adventure of Link left (sitting CIB on my shelf, my first CIB NES game and I am very proud of owning it, even if it isn't rare.) I also had the feeling of accomplishment after completing Luigi's Damn Purple Coins in Super Mario Galaxy.

Only time I felt like a badass though was when i got an S on Sweatin on Jumpin Jack Flash in EBA.