Straight from the Playstation Blog comes your weekly update.  Source

Games and Demos
GTI Club+ ($9.99)
Magic Ball ($9.99)
Ultimate Ghouls 'n' Ghosts for PSP ($19.99)
Skate 2 demo
GTI Club+ demo
Buzz! Master Quiz demo for PSP

Expansions and Add-ons
Disgaea 3: Absence of Justice Maikai Kingdom Main Character Pack ($3.99)
Disgaea 3: Absence of Justice Character: Pram ($1.99)
Disgaea 3: Absence of Justice Character: Zetta ($1.99)
Shaun White Snowboarding Mile High Pack - Regular Edition ($9.99)
Shaun White Snowboarding Mile High Pack - Target Edition ($9.99)
Shaun White Snowboarding The Freebie Pack - Regular Edition (free)
Shaun White Snowboarding The Freebie Pack - Target Edition (free)
Brain Challenge Expansion Pack ($4.99)

Guitar Hero World Tour tracks
* “Hillbilly Deluxe” by Brooks & Dunn ($1.99)
* “Me and My Gang” by Rascal Flatts ($1.99)
* “Ticks” by Brad Paisley ($1.99)
* Country Track Pack ($5.49) - “Hillbilly Deluxe” by Brooks & Dunn, “Me and My Gang” by Rascal Flatts, and “Ticks” by Brad Paisley
* “Low (Travis Barker Remix)” by Flo Rida (Feat. T-Pain) ($1.99)
* “Lycanthrope” by +44 ($1.99)
* “What’s My Age Again” by Blink 182 ($1.99)
* Travis Barker Track Pack ($5.49) - “Low (Travis Barker Remix)” by Flo Rida (Feat. T-Pain), “Lycanthrope” by +44, and “What’s My Age Again” by Blink 182

Check out more below...

Rock Band tracks
* “You Got It” - Roy Orbison ($1.99)
* “Ooby Dooby” - Roy Orbison ($1.99)
* “Oh, Pretty Woman” - Roy Orbison ($1.99)
* “Mean Woman Blues” - Roy Orbison ($1.99)
* “In Dreams” - Roy Orbison ($1.99)
* “Claudette” -Roy Orbison ($1.99)
* Roy Orbison Pack 01 ($9.99) - “Claudette,” “In Dreams,” “Mean Woman Blues,” “Oh, Pretty Woman,” “Ooby Dooby,” and “You Got It” by Roy Orbison.
* “Mr. Cab Driver” - Lenny Kravitz ($1.99)
* “Let Love Rule” - Lenny Kravitz ($1.99)
* “Freedom Train” - Lenny Kravitz ($1.99)
* “Are You Gonna Go My Way” - Lenny Kravitz ($1.99)
* Lenny Kravitz Pack 01 ($6.99) -“Are You Gonna Go My Way,” “Freedom Train,” “Let Love Rule,” and “Mr. Cab Driver” by Lenny Kravitz.
* “Megasus” - Megasus ($0.99)
* “Entangled” -Honest Bob and the Factory-to-Dealer Incentives ($0.99)

Game Videos
Pulse 1/15
Cuboid trailer
FIFA09 - PSN Exclusive: Inside FIWC 2009
BUZZ! Quiz TV trailer
Mafia II Holiday Confession trailer
Mahjong Tales trailer
Magic Ball trailer
PSN "Movie Download Machine" commercial
Tekken 6 PSN Announcement trailer

Movies and Television
Pineapple Express Blu-ray trailer
The House Bunny Blu-ray trailer
The Wackness Blu-ray trailer
Why I Love Monty Python video

Wallpapers and Themes
Pineapple Express wallpaper
Savage Moon wallpaper (x2)
Savage Moon theme
Tom Clancy's EndWar Joint Strike Force wallpaper (x4)