Why is Stargate in the poll? That game is fantastic. A lot of people think it's just "shoot the pyramid" all day, but playing through modes is only one half of the game. There's a lot of strategy involved with things like managing your quartz, collecting all the Stargate segments, selecting and collecting the transporter awards you want, raising the super jackpot before wizard modes, I could go on. Not to mention it's just fun to shoot. It's not going to be for everyone, of course, but no way should it be in a discussion about the worst games with best themes.
I'll throw Dr. Dude in the discussion. I love the cheesy theme, but unless I see super dude is close to being lit and I have a chance at getting a high score, I have no interest in playing it. I just find it too slow and repetitive to hold my interest.