The 2012 BOINC Pentathlon is now available for signups, I don't know if we signed up yet but the available projects in each discipline are as follows.

Showbag
All BOINC projects can be suggested
GPU
Collatz
Distributed Rainbow Table Generator
Einstein
GPUGrid
Milkyway
Moo! Wrapper
Primegrid
SETI@home
Physics & Chemistry (CPU)
Constellation
Cosmology
Ibercivis
Leiden
QMC
Biology & Medicine (CPU)
AlmereGrid
Correlizer
MalariaControl
RNA World
Rosetta
Mathematics (CPU)
ABC
Mersenne@home
NFS@home
NumberFields@home
Primaboinca
SAT@home
SZTAKI Desktop Grid
sudoku@vtaiwan
Yoyo@home

Each team gets a vote for what project is in each discipline, and I remember last year we voted on what AMDUsers vote would be. Assuming we vote again this year mine is as follows...

Showbag
The Clean Energy Project - Part 2
(May be better to vote for World Community Grid since that is more likely to win over individual sub-project suggestions)
GPU
Milkyway@home
However Collatz would be fine as well, since I also have two old 3850s that no longer run Milkway
Physics & Chemistry (CPU)
Constellation
(However Cosmology and QMC are great projects as well, so hard to choose)
Biology & Medicine (CPU)
Rosetta
Mathematics (CPU)
Yoyo@home