Well i have time, so i'll answer all your questions...(some game spoilers, if you care)
1. Coolest moment is a tie between finding out your character is Revan in Kotor, and the end of Deus Ex where you have 3 choices (each with its own ending) and they all rock out loud. (another cool thing I found in Deus Ex, is that in this cryogenic freezing chamber, one of the test subjects names is Marco Ragnos)
2.Boba Fett I loved in all of his cameos. In Shadows of the Empire, he was one of the toughest bosses and one of the most fun to fight. In Jedi Academy, the fight is exciting because he pops up out of nowhere and it is definately one of the longest battles. And Jango is by far my favorite character to play as in Tony Hawk Pro Skater 4.
3. My favorite Bosses would be, The poo monster from Conker, All of the bosses from Diablo 2, The first Temple boss from Zelda: Majora's mask, and Alec Trevlen and the end of Goldeneye.
Good... Bad... I'm the one with the gun.
Hail to the King Baby!!