Beer for Geeks
Requires you to use your own can opener, and requires you to read the directions carefully before opening the can. Originally only came in an 8-oz can, but now comes in a 16-oz can. However, the can is divided into 8 compartments of 2-oz each, which have to be accessed separately. Soon to be discontinued, although a lot of people are going to keep drinking it after it's no longer available.