Ha! I have a playlist titled "PUMPT!!" on my iPod for exactly this purpose... I'll share mine, too. But just as a disclaimer: I'm aware that I sometimes have... Er, questionable taste in music. But I've found that listening to really cheesy pop honestly lifts my mood and really gets me moving, hehe.
Some suggestions:
Music Is My Hot Hot Sex - CSS (not a dirty song! lol)
Boyz - M.I.A.
Almost all of Britney Spears' "Blackout" album--great dance music!
Almost all of the ABBA Gold album (the fast songs). I <3 ABBA! Haha.
Golddigger - Kanye West
Some Girls - Rachel Stevens
I'm Not Your Girl - Lalaine
Cleveland Rocks - Presidents of the USA (close to my hometown, hehe)
Lump - Presidents of the USA
Flagpole Sitta - Harvey Danger
My Own Worst Enemy - Lit
The Bad Touch (aka "Discovery Channel") - Bloodhound Gang LOL
Love Today - Mika
Grace Kelly - Mika
No Sleep Tonight - The Faders
Rock And Roll All Nite - Kiss
Walk Like An Egyptian - The Bangles
La La - Ashlee Simpson
Hips Don't Lie - Shakira
Pretty Fly (For A White Guy) - Offspring
Sugarhigh - Coyote Shivers
Love Shack - The B-52's
Everytime We Touch - Cascada
I Want Candy - Bow Wow Wow
Dip It Low - Christina Milian
AM to PM - Christina Milian
Material Girl - Madonna
Walking On Sunshine - Katrina & The Waves
Dancing With Myself (techno version) - Generation X
What's Up? (remix) - 4 Non Blondes
3 Small Words - Josie & The kittycats (from the movie! ha)
Satellites - Cherry Monroe
Lady Marmalade - Christina Aguilera, Pink, Mya, Lil' Kim
Survivor - Destiny's Child
Hot Stuff - Donna Summer
Don't Bring Me Down - ELO
Our Lips Are Sealed - The Go-Go's
Ooh La La - Goldfrapp
Bossy - Lindsay Lohan (I know, I know... But it's SO catchy)
Screwed - Paris Hilton (see above LOL)
True To Your Heart - 98 Degrees/Stevie Wonder (from Mulan)
Whew! I really could go on forever, but I think I should stop myself now, hehe. I will definitely look up song of the stuff that you all have suggested... I'm kind of a music junkie.