On PlisTUBE you just have to search for the name of your favorite artist and automatically creates a playlist with his/her best videos, also you could add more videos very easy, quick and without interruptions.

http://www.plistube.com/

Animoto gives users a simple, click-of-a-button way to turn their digital photos into professional-grade web videos. Through YouTube's API, users can upload their videos directly to YouTube so that the YouTube community, and not just the Animoto community, can enjoy their creations.

http://animoto.com

This mashup takes your complete iTunes artist and title library and adds on all the power of the internet and video. The goal is to take your music listening experience to a whole new level of enjoyment and discovery. For each artist, we bring photos, concert dates, Twitter discussions. Then, for each song, we bring great YouTube videos, lyrics, similar songs from Last.fm, and friends' songs for the same artist. All this at the convenience of your iPhone or Android G1.

http://imusicmash.com