There's a serious attempt underway to break the speed record for climbing all 283 of the 3,000+ft mountains in Scotland. You can follow Stephen Pike's progress on his blog, here as he attempts this epic feat in about 40 days.
I hope he raises lots of money for the John Muir Trust, which works to protect Scotland's wild places.
I also hope he doesn't encounter too many dancing sheep, or jelly-fish.
Update 7 June: he's done it: 283 Munros in 39 days, 9 hours and 6 minutes. Amazing.