Starfall http://www.starfall.com/
Clifford games and activities http://www.scholastic.com/clifford/
Between the Lions web site http://pbskids.org/lions/
Another Clifford Web Site http://pbskids.org/clifford/
Fun Math Games http://mathforum.org/templepow/support/koline.html
Lots of games to reinforce phonemic awareness skills http://teachers.cr.k12.de.us/~galgano/dibel2.htm