--Links Galore--
PSPHotlinks.com Lots of links to PSP Friendly sites.

--MP4 Videos and Movies--
PSPube.com Search & Download 1000s of MP4s - No conversion needed!
PSPicy.com PSPicy - Direct MOVIE Downloads
Podcast.com - Videos, Music, and more (only get MP4, MP3, M4V)

--MP3 Music--
PSPicy.com PSPicy - Direct MUSIC Downloads

--PSP Demos, Themes, Wallpapers, and More--
PSPoof.com
PSP Demo Center

--PSP Movies, Chat, Videos, and more--
pspdownloads
allpspdownloads
megajew
pspdrugs
playstationnetworktrade
pspow
pspxp
technicpsp
Movul
Shadowsfall
pspgame