One landing into Las Vegas about fifteen years ago -- it was noon-ish and September so it was hot. My impression from the cheap seats was that the pilot was having trouble getting the plane to actually land on the tarmac what with the hot air rising off the blacktop lifting it back up again. We turned off the runway on the last taxiway still going at a good lick and the plane tipped up on two wheels, which is not a good thing on a tricycle...

My worst-ever landing? The pilot declared an emergency and landed the ancient chartered TriStar on Gander's 2km-long military-grade runway as he had no functional flaps. Looking it up later I found the no-flaps landing speed for a TriStar is about 240km/hr at sea-level. Wheee!