rainy day ideas to keep the kids occupied

My 6 year old son loves all of the Home Alone movies.  He has been a fan since the age of 4.  I originally ordered this boxed set because my son really enjoyed watching Home Alone I and Home Alone 2.  Much to my surprise, 3 and 4 were also hits with him.  He has watched them over and over again.
I highly recommend ordering this boxed set of all four movies on DVD today and stowing it away for a rainy day movie.  Don't forget to have some movie candy and microwave popcorn on hand to add to the fun.  What movies do you recommend for rainy days?

Regularly 29.99 on sale for 16.88.  Amazon prices can change quickly, so don't wait.