Sure. As for the front-end, I use Mala, which is nice because it takes into account vertical games and rotates them accordingly.
I have also modified my theme by linking the game screenshot shown for each game with a video of said game, so that it starts a few seconds after the screenshot.
OS is a stripped-down XP, and I have also tweaked the boot process so that nothing appears before Mala itself. I had chosen to get rid of the pointer, but it proved a bit of a PITA when I had to reconfigure certain things, so I brought it back.
What else ? I have only Mame installed, version 0.145, because I like simplicity and functionality. Well, it is rather a no-nag version, made by a French guy and called EmuCR_Houba_0145. This is a dedicated bartop, so it will stay like that. Never noticed there were so many vertical shooters (installed around 250 of them). There are a few that are PCengine/Turbografx 16 that I will miss but heck, they're to be played on original hardware, which I have !
I will make a video of the fully-working and decorated thing later and link to it.
Thanks for your interest.