Children's Poetry Archive

http://www.poetryarchive.org/childrensarchive
Part of the bigger Poetry Archive site, these children's pages contain poets such as Allan Ahlberg, Charles Causley and Wes Magee reading some of their own work. A lot of the poems feature introductions by the authors and there's also video interviews with several of the poets. You can search the site by poet, poem title or browse by theme.