[–] Disappointed 0 points 1 point 1 point (+1|-0) ago (edited ago)
Nah, I usually just type in something like "ubuntu mate" and you'll get heaps. Just change the name up to suit. Most of them are pretty boring but they make a point of opening up all the menus and some programs, so you'll get a good idea of what everything looks like.
Edit: Actually this guy has a lot of short videos which show off each desktop well: https://www.youtube.com/playlist?list=PL8B52D3AD4686C562. Just take a note of the upload date to make sure you're not looking at old versions.