people i would recommend for tube designs
http://www.zuzanadesigns.com (did a shit load)
http://www.twistedbydesigns.com (did tube8)
http://www.erobrand.com (did a bunch for bravo)
http://www.s2odesigns.com (did thatrocks.com for me)
http://www.etcyou.com/ (has done a bunch of tube/video based sites)