This is hands down my all time favorite theme song to any show ever. It's just so dang catchy. My basis of friendship is whether or not the other person "Woo-oo"'s after I sing "Ducktaaaales." Anyone who doesn't "Woo-oo" in response is not a person you want to be friends with.
2. Sailor Moon
I used to wake up at 6 in the morning when I was younger just so I could watch Sailor Moon. Any other time you would have to drag me out of bed, but the second I heard this theme, I would be bouncing all over my living room screaming along because in my head I was Sailor Mars. I still think that. Praise Usagi that there's now the reboot on Hulu. Sailor Scouts for life.
3. Buffy the Vampire Slayer
No other instrumental has ever made me feel the need to slay something while aggressively finger pointing more than this. My only regret in life is that I was never the Chosen One.
My love for Joss Whedon began with Buffy and really solidified with Firefly. The whole theme is so simple yet so pretty, and it really encompasses the whole feel of the show and its characters perfectly. Don't mind me as I still ugly cry over Wash.
5. Fresh Prince of Bel-Air.
I mean, obviously.
IIIIIIIIIIIIIII'LL BE REEEEEEEEEEEEEEADY. I had to, it's just too good.