I think that the green Miami Hurricanes jersey circa Willis McGahee is still probably my favorite looking jersey on the EF field. I have some but don't have pics handy. Here is a link to RaiderMike's Hurricanes in white jersey with green pants:
http://home.pacbell.net/efdecals/canes.jpg
Some other favorites:
Darren Jahamini's Cincinnati Bengals...newer jersey...really looks sweet.
Auburn Tigers...simple, yet really came out crisp. I've sold mine but had a pic on this site earlier.
I like the Michigan Wolverines (I've seen them live...Guttmann painted). Here's a link to RaiderMike's:
http://home.pacbell.net/efdecals/michigan.jpg
Also Terry Popham painted some Rams in the metallic that were pretty awesome.
Finally, the Super Bowl 49ers that CorEy had were very sweet.
Those are just some and I'm sure I'm forgetting some awesome ones.