I've done it last week and I'm doing it this week.

This week in PSN updates:

Japan:

Tuesday:

Silen: New Translation - new trailer

Thursday:

MGS 4 Database

beats. - PSP game
Everybody should download this, since it is fantastic

Mainichi issho stuff


US

PS3 Games and Demos:

Fatal Inertia - Demo and Full Game ($29.99)
Well, I didn't like the demo.

NCAA Football 09 - Demo

Wolf of the Battlefield: Commando 3 - Demo
If you didn't already downloaded the full game, you should definetely check this one out. I like it.

Hail to the Chimp - Demo

Game Trailers:

Linger in Shadows
This one looks strange, but interesting.

PAIN: Character Intro Trailer
Accompaning the free 1.67 update, but actually old trailer.

Fatal Inertia EX Titan Trailer

Golden Axe: Beast Rider Teaser Trailer

Hail to the Chimp ‘Campaign Trail Madness’ Trailer

Add-Ons:

Hot Shots Golf: Out Of Bounds Oceania Course - $4.99

MGS4 Database - Not really an add-on though...

The Incredible Hulk DLC - free

Guitar Hero III: Legends of Rock Coldplay Track Pack - $6.25
- Violet Hill
- Talk
- God Put A Smile Upon Your Face

Rock Band songs
- Rock ‘n’ Roll Dream by Crooked X - $0.99
- Afterlife by Avenged Sevenfold - $1.99
- Critical Acclaim by Avenged Sevenfold - $1.99
- Hammerhead by The Offspring - $1.99

PSP Games:

Gurumin: A Monstrous Adventure - Full Game $14.99
Looks quite decent for the price.

Syphon Filter: Dark Mirror - Demo (also 2 trailers on the PC store)

misc stuff:

AST Dew Tour Theme - one each for PSP and PS3

PAIN Theme Song - mp3

Movie Trailers:

Step Brothers - 2 trailers


EUROPE:

Civilization Revolution Demo - already on US store

Dark Sector Demo - already on US store

Warhawk Booster Combo Pack

Guitar Hero III: Legends of Rock Coldplay Track Pack €5.99
- Violet Hill
- Talk
- God Put A Smile Upon Your Face

Everybody's Golf World Tour - Oceana Resort Course €3.99

High Stakes: Poker Add-On 1 (free) - adds Omaha, Pineapple and Crazy Pineapple

3 High Velocity Bowling Theme themes

PAIN Nigel Theme

Trailer:

GT Academy Launch Film

Battlefield: Bad Company

2 trailers for the PlayStation Movement Trip


Notice what is missing from the EU store, but got released in the other two stores?
It's the MGS4 database.
It's multi language and shit, but they just didn't care about releasing it for EU today. Too bad, the other versions aren't compatible with my save files.
Seriously SCEE: SCREW YOU!

I'm really, really mad with SCEE now, but I will give this week a 2 out of 5.