Yeah, he's a character actor that really gets around. He was a love interest of Daphne on "Frasier" for a number of episodes. He also had a string of appearances on the series "Blind Justice". He was on a two-part episode of Stargate SG-1, too. I haven't seen Warehouse 13... is his performance very similar to what he has done elsehwere? Although I like his characterizations, the ones I've seen seemed all fairly similar to each other; same intonations and mannerisms.
I'm not sure what to say. Yes, he does have the same intonations, but on Warehouse 13 he's definitely a good guy, while he's most definitely not a good guy on TNG and he's not very sympathetic on Frasier, either. And he does a fine job as good guy, too. (Oh, and thanks for that spotting - I'd forgotten all about that role.) You might want to try Warehouse 13 for yourself, if you have access to ScyFy - I love that show. Not so much for Saul (he's fine, but I wouldn't consider him my favorite character by any means) but because it's just a whole woppin' wad of fun.