I thought this was a really weird thing to say. The awesome thing about that video is the artist's talent and the actual Photoshop skills used are actually fairly basic: it's mainly just using the paint tool. Undeniably the guy has mastered the tool, but I think it's weird when people draw attention to the tools rather than the work or the artist. It's like me showing you a fence and saying "Some awesome hammering work went into that." No-one, except another carepenter, would care.Some SERIOUS photoshop skills if you have 5 mins. This will blow you away!
http://player.vimeo.com/video/31333291?autoplay=1
As a dabbler in digital design myself, I appreciate the skills people learn to develop their creations, but ultimately it's what you create with them that matters.