Laputa is great. Another great movies:
Children of Heaven, The (absolutely awesome)
Spirited Away (from the same guy who has made Laputa: castle in the sky)
Howl's Moving Castle (another movie from Miyazaki)
What Dreams May Come (I love this one)
Kikujiro no natsu (great comedy)
Click (lot of people don't like it but I enjoyed it)
Windstruck (awesome, unique)
Terminal
Big Fish
Green Mile, The (classic)
Interstate 60 (a bit weird but I liked it)
3-Iron (ditto)
I can heartily recommend these movies. I really
love majority of them. I even won't mention Forrest Gump, that's the classic!
Also, there is a service called
Spiritual Cinema Circle created by the same guy who directed What Dreams May Come, sending monthly DVD with positive movies to their subscribers.