Fleep

I read Fleep a while ago and I really liked it. It's a relatively short (10 minutes, tops) comic about a guy who is trapped in a phone booth by concrete walls and has no idea what happened. Using nothing but whatever items he has at hand and his own brain, he manages to figure out where he is and why he is trapped. The reason I enjoyed it is because the deductions are for the most part logical rather than contrived, and it is nice to read a story about a person actually thinking their actions through and executing plans that make sense given the available information and limited options. It is also very suspenseful, maybe even a little scary at first. Here's the author's description:

Fleep
Fleep made its debut in the weekly newspaper, "Asian Week" in Feburary of 2001. It's about a boy who wakes up in a telephone booth which has been mysteriously selaed in an envelope of concrete. Using only the contents of his pockets (two pens, a paperback novel, three coins and 20 ft of unwaxed dental floss) our hero must fashion and execute an escape plan before he runs out of oxygen. Believe it or not, I try to end each strip on a cliffhanger which is very challanging considering most of the 42 strips take place inside this one phone booth.

While it was running, Fleep was everything I wished that a comic strip could be. It was ambitous, mysterious and utterly masturbatory. About a quarter of the strips feature the main character working through various math problems. They are some of the most dramatic math problems you'll ever see in a comic strip. Unfortunately, the arts editor at Asian week didn't see it that way and canceled "Fleep" two thirds into its run because it wasn't asian enough.

Read it here. I don't think you will be disappointed.