Twilight Zone has to have some of the nastiest and badly placed pop bumpers ever! Right above the left outlane and inlanes, putting the ball into them will often result in a drain down the left outlane or the ball will arc out of the pops and go SDTM between the flippers without being able to do anything about it, grrrr!
Love the pops on Attack From Mars and Medieval Madness. You can often get the bonus multiplier way up with a good session in them, and with a long ball that's lots of extra points, and there is also the possibilty of the ball exiting left into the Merlin Saucer on MM for the extra ball without starting the Madness Multiball.