I guess I have kind of done this backwards by not posting until completed, but I thought I'd throw a few pics up of my first cabinet build, a mame machine build roughly off the Project Arcade/Lusid plans. So it's probably nothing most haven't seen before, but I was quite shocked at how awesome it all turned out. Been wanting to build one for years and finally just decided to do it approximately a month ago.
I went with standard 3/4 inch MDF for the whole thing, turned out well IMO for my first major wood working project since highschool shop class...
Quick pic of one side cut out:

I had already cut out the sheet containing the door, back pieces, speaker panel etc per the plans. I used the 48" drywall T-square you see there to serve as a saw guide for all the cuts, made with a regular circular saw and a couple w/ the jigsaw. Worked great, think it was $10 at harbor freight, the smaller carpenters square was like $6 or something. Just FYI The $3 clamp shown was garbage. I had about 4-5 total, all but one are trashed now, and I rebuilt a couple of them along the way...
Side 2 I traced from 1 and then rough cut slightly oversized w/ the circular saw and used a flush trim bit in my $49 harbor freight router. Worked absolutely great, sides turned out 100% identical as far as I could tell. Slot cutting bit set I got from HF as well, worked perfect. Certainly has to beat trying to jury-rig something with a dremel and cut off wheel. I got 20% off the router with a coupon so I guess it was only $40ish.
Here is a shot of the sides assembled together on the monitor shelf and base. The base I wish I had taken a pic of, I strayed from the plans and used 2x4 construction as I didn't like the idea of just using MDF strips for the base. Mounted some casters I got at harbor freight again for like $4 each or something, swivels for the front, fixed for the rear two. Worked nice.

Here it is coming together nicely, most pieces mounted.

Ended up needing to trim the speaker panel for the TV, and drilled the CP holes. I downsized the CP some from the plans as I didn't want a trackball and it seems oversized otherwise. Think I went with 31" width panel.

Here it is all finished up. I put on a couple coats of Glidden primer and I believe 3 total coats of Glidden semi-gloss black. Used a 8 inch I think it was foam roller from Home Depot to apply. I painted inside and out just to seal the MDF completely.
Marquee is the atomic mame logo from Game on grafix. Great quality.

Controls are Happ competition joys, with GroovyGameGear's standard buttons/switches. They were priced very well I thought, work great. I also went with their KeyWiz encoder and wiring set. Works 100% so far, wiring was painless, although probably alot less neat in the end than what I see on here. Tmolding purchased through GGG as well, good prices it seems, fast shipping and good stuff. I recommend...
CP overlay was printed by Game on Grafix again, using someones artwork as a background, I drew up the button and joy surrounds in Photoshop. Very happy with it.

One more powered on with poor yellow lighting and the marquee washing out my phone's camera...

Really appreciate all the info and resources people have posted on this forum, and obviously to the site owner for all the original content and keeping the site running. Totally invaluable for guys like me who can follow a guide but probably not build from the ground up to start with...