SanTan Brewing because Boston Beer Company was C&Ding them for selling a glass very much like the Sam Adams one. Turns out the Arizona brewery's design prowess extends into 12-pack cases. Looks like a cross between motorcycle design, splashed with the firebird motif common to the Southwest and used for SanTan's logo. The tabs strewn on the black background let you know that the vessels inside are cans in a stylish way that fits with the yellow sans serif lettering.
Magic Hat, as well, has a new 12-pack holder, and they've kept with their recent musical theme:
And then, of course, there are creative package designers working on ways for us to get beer (and other booze) into our face, like the slew of designs TrendHunter has put together.
My favorite one might be MugPub's packaging:
It looks like ice cream or coffee. Design is by Russian artist Ivan Maximov, and definitely is a nice low-key solution to the beer-to-go problem.