The revealed potential thread!

I used:

6 12-packs of black cubes
2 12-packs of red cubes
1 10-pack of bonus potential cubes

I cubed 13 items (bonus and regular intermixed), and I increased the rank on all of the items I cubed - except my Shark Tooth Skipper Shoulders (I did go from 6% DEX to 12% DEX though).

First part of items (left picture of item is before, right picture of item is after): http://i59.tinypic.com/mwr0r9.jpg - go to see this one in its raw image because it's so big
Second part of items (left picture of item is before, right picture of item is after):

Went up to legendary from unique on my gloves (regular), hat (regular), secondary weapon (regular) and gun (bonus).
Went up to unique from rare on earrings (regular), pendant (regular), emblem (regular), belt (regular and bonus) and shoes (regular and bonus).
Went up to unique from epic on cape (regular and bonus), tattoo (regular) and glasses (regular).

What Potential Lines I Liked the Best:
18% DEX on Gloves
12% ATT on Gun
12% DEX on Shoulders
40% Boss on Secondary Weapon
15% DEX on Emblem
17% DEX on Glasses
15% DEX on Pendant

I didn't go in any particular order. I jumped around a lot from one item to the other.

I did get +14 DEX and +10 ATT with epic bonus potential from rare on my RA pants.