TIP: once you have the H.I.G.H. tech glider, the bob sled, a respectable booster, and a long enough ramp, you can do a trick that will make you start off at an INCREDIBLE height and a full tank of fuel (if you use that kind of booster). here's how to do it: when you take off, go STRAIGHT UP using the booster to keep you going in that direction. once your out of fuel, go STRAIGHT down. once you crash, penguin god will appear on your screen telling you to go forth to fly again. WARNING: go too fast and you'll leave a crack on the planet. and it won't work unless you kit the ground on a 90 degree angle.
switching weapons won't work after the first switch. this is especially annoying when you try to switch to a more useful weapon and get stuck with the pistol instead.
wait, if dave's a ghost, then why didn't kevin run away while you were getting the girls on the "lost purse" quest? the only guy who was keeping watch over him was dave, so maybe he really is " too normal to be noticed."