Judge Dredd: Amazing theme! Great Dots! Great art!... Sometimes a game is much less than the sum of its parts. I picked one up in a trade having never played one and it just didn't plick. My STTNG is the same vintage and also a widebody yet plays 3x as fast as that one somehow.
Cosmic Cart Racing: Picked it up for my P3 when I had it as you could not play test these. The game is about 20% of the game the other P3 modules are. Imagine if you put all your budget into graphics and did nothing with the playfield/rules. Yes I know the other downloadable games for the modules make up for it but CCR is the worst P3 module (IMO).
Avengers: Temp traded for this one: It just lacks soul. I know there is alot to do, but it just doesn't feel exciting. The one redeeming quality is the hurry up timer for Hulk. Other than that, its a pretty box of lights for the super deep code obsessed tournament guy.
Independence Day: Super fun game for about 30 minutes. I picked one up last month because it was local and cheapish. Traded for a Black Knight and cash after a month because it has no staying power. Great layout, art, dots, smooth gameplay but almost no code. Seriously, there might be 30 minutes of fun in there and you can beat it every time lanes wide open.
Super Mario Brothers: Great theme, great art, great integration... how many times can you shoot the yoshi ramp? At least it was easy to move. This is one of those games that needs to be out on location as its great once or twice but at home... yeesh.
Now that I've crapped on your favorites.
For me the ones that lose are the ones I get into because of the theme that just turn out to be stinkers...