My favs include:

Optimum Lift Bars
Promax Lemon Bars
Proteon Bars

personally i cant stand any protein bar.....my favorite snack bars are powerbar and clif bar.

Clif Builder's bars are good, and I like the Pure Protein bars as well. Met-RX Big 100s are probably the best tasting I'd say. Also notable are Doctor's Carb Rite bars, 20g of protein and some awesome flavors like Raspberry Truffle, Chocolate Mint, Cinnamon Bun and more.

The best bars IMO are ISS Pro 42, they are one of the highest in protein and low in sugars, great deal and great tasting. Check them up.

In no particular order:

Supreme Protein Bars - expensive and high in sugar alcohols, but absolutely delicious
Detour Detour bars - decently priced with decent nutrition profiles; these also taste quite good.
ISS Oh Yeah! bars - These taste fantastic, although they're more expensive
Pure Protein bars - Pretty decent taste, quite a bit of sugar alcohol. Cheap as dirt at Wal-Mart
VPX Zero Impact bars (with milk) - Excellent nutrition profile. These are a little bit dry, but taste great with milk

I always find the pure protein and cliff bars on sale at my grocery store and often pick up a couple.