Here's one of my favorite mashups for the occasion: Intergalactic Friends: Dandy Warhols vs. Beastie Boys
And since we love boys so much:
Girls & Boys - Prince
Girls and Boys (Pet Shop Boys radio edit) - Blur
Boys Better - Dandy Warhols
And finally one of the sunniest, most upbeat jazz tunes I know:
Hallelujah (m4a) - Red Garland
Have a great day!