Street Fighter 2 at least has a cool theme and nice music, so I think I have to go with Striker Xtreme. I think it was one of the first pins I played IRL after becoming a pinhead, and it was sitting next to a Hook and T2. Not knowing any better, I played some of Striker while my brother discovered the joys of T2. I just recently tried playing it again at Flippers and hoo boy, everything is just so bland and boring...

Another game I thought was pretty bad was Sharkey's Shootout, but after reading the rules I came to enjoy it somewhat. The three controllable pop-ups are pretty cool and I mean, it's a pool themed game with pool based rules, those are always pretty enjoyable. It's just again, the bland theme, music, and sound that really hurts it imo.

X-Files has that incredible soundtrack though. I would honestly own one *just* for the music, I don't care how shallow the rules are! That said I've never played it IRL so I have no idea how hard the ramps really are... but I do like a good challenge.