My definite buys:
Jonathan Coulton - Future Soon
Jonathan Coulton - Code Monkey
The Slip - Even Rats
Blondie - Atomic

Blondie and Lacuna Coil please, and hopefully more of them in future (Enjoy the Silence by Lacuna Coil in particular)

Off the top of my head, these are the tracks I would definitely purchase if made available on PS3:

Alias Unknown - Top Back
Bill Bruford's Earthworks - Footloose and Fancy Free
Bang Camaro - Push Push (Lady Lightning)
Children of Nova - The Complexity of Light
Flogging Molly - Drunken Lullabies
All three Jonathan Coulton tracks
The Hold Steady - Sequestered in Memphis
The Shins - Australia
All Steve Vai tracks
Blondie - Atomic
All Flight of the Conchords tracks

I also remember reading that Spock's Beard may have tracks on the RBN. If so, they would also make the list.

Leave the $3 songs, I'm not a big fan of any of them.

Just know this Harmonix, once the RBN selections hit the PS3 I will phone your offices five times daily to ask when we will see the Flogging Molly songs. After the first week I will record myself asking this and play it back outside your offices at a volume greater than 150 decibels. We're talking about window shattering noise levels here. After the second week you'll be getting somewhere around 5000 peices of mail daily requesting those songs on PS3. After the third week, I'll start getting annoying about it.

I hope Harmonix reads these threads. I am a HUGE Jonathan Coulter and Flogging Molly fan and was excited to see them as being downloadable until I found out that PS3 users don't have RBN yet. Hopefully when this comes available these songs will be available for people like me.

Anarch Club - ALL OF THEM
Creed - Higher
Drowning Pool - Bodies
Evanescence - Going Under
Finger Eleven - Paralyzer (This is almost worth buying an XBOX for!)
iwrestledabearonce
Lacuna Coil - Survive
Marillion - Whatever is Wrong With You
Ministry
Prong - ALL
Revolting ****s
Seether - ALL
Smashing Pumpkins - Bullet With Butterfly Wings

Jonathan Coulton - The Future Soon
Jonathan Coulton - Creepy Doll
Jonathan Coulton - Ikea
Jonathan Coulton - Code Monkey

Anyall future JoCo releases.

The Dark Tranquillity songs, whatever they are.

Semi-Charmed Life
Bodies

plz HMX

As a 360 user, I am here simply to keep this thread afloat with this post to help you guys out, since it seems to be falling down to almost the 2nd page... Good luck to you guys!