OK, so I guess I'm a fiend for lists. I went through MAWS and noted every game made before 1980 that included decorated bezels, but I hadn't already mentioned in the first post (Vector games and games with lamps/LEDs, backdrops or overlays). There's quite a few! Note that this list is limited to the games that had visible bezels in the cabinet images. I likely missed some, especially if there isn't a cabinet image in MAWS or the game hasn't been emulated yet.
These were the days before Pac-Man and the arcade explosion of the early 1980s. Lots of great but forgotten games here, with some interesting artwork. I especially like the Universal games, Crash, Robot Bowl, Sky Raider and Atari Basketball.
EDIT: Moved M-4 to main list because it used a backdrop image. Thanks gregf. EDIT: Moved Midway's Bowling Alley to main list because of it's "Flash Scoring" lamp panel. Thanks gregf. EDIT 5/11/07: Added new freely available Exidy rom information. EDIT 5/29/07: Added Smokey Joe EDIT 7/2/07: Added RamTek's Hit Me Edit 7/3/07: Added Subelectro's "Super Knockout", "Springboard" Edit 8/13/07: Added Minesweeper. Thanks gregf. Edit 1/2/08: Added Road Runner which was recently dumped Edit 1/2/08: Moved Road Runner to main list. Edit 7/8/08: Added Namco version of Galaxian Edit 3/2/09: Added Acrobat TV and details about Hustle Edit 3/3/09: Added Lunar Rescue "Space Invaders Conversion" version. Thanks gregf!