I've been watching youtube reviews for quite a few years now, Vangelus is my favorite but it's hard to pick between him and ILoveMess aka Ray.

ILoveMess pretty much is my inspiration for collecting G1 figures again. He had so much love for G1 and was damn funny. He also did a song called "Unknown Transforming Robot" which was hilarious. However a while back, maybe 6+months, he disappeared off youtube and took down all his videos. Apparently he's on hiatus while he's working on his band, but he'll allegedly be back this year. Keep an eye out for him if you haven't seen his stuff.

Then Peaugh (pronounced pee-aw IIRC) and Thew are my next favourites. Peaugh isn't focused on entertainment, but he gives you a good look at the toys and will point out if something is particularly crap or particularly brilliant. He occasionally does some relatively easy mods as well which are good inspiration. And Thew's just a rocking combination of metal and nerd. Rocktastic