I believe in them all - Loch Ness Monster, Sasquatch/Big Foot, aliens who create crop circles...I love a good mystery! So until they're disproved, I'm a believer.
There's a Scottish sailor who has devoted his life to finding Nessie, and he has what he believes is a new photo:
He says it looks like a really big Manatee, but it's real. You can read more of his story here
There's also a reported Loch Ness-type monster in Iceland, though there are lots of good points for calling it a fake. Here's the video -