Here is what I have so far on my MAME cabinet, "Escape From New York". It is 3/4" MDF, using a modified Woody design. I am no woodworker, so it is coming out pretty good, I think. My circular saw blade isn't straight, my jig saw isn't straight, however my router is proving to be the savior of the project.
All my tools are used and abused, as I live on a farm here. Most of the time I have to take care of the horses, but every once in a while on Saturday I have a few hours that I can dedicate to the cab.
The O/S will be linux (linux guy here!), running Daphne, GLQuake, Mame, as well as other consoles I have floating around on the HD.
Parts: Opti-Wiz and TurboTwist2, Top Switchable Prodigy Joysticks, Suzo 2 1/4" trackball, KeyWiz
Finish will be black with yellow t-molding. Player buttons are yellow, admin buttons are blue. Two player, six button normal layout.
Front-End will be themed based on the movie "Escape From New York", with bg music being the theme song. Besides being an awesome movie, my wife and I escaped the rat race and bought a horse farm when we migrated from NY to NC, so that is the real meaning of it.
Decided to go as thin as possible for the room it is moving into, and also wanted to stay married. Wife has been very supportive, but getting her to play Contra (her favorite game) on a joystick and mentioning how awesome it would be to have a real cabinet sold it to her.

Will try to keep updating my progress, but all credit really goes to Knievel; he is the real inspiration for me to stop dreaming it and start doing it.