I remember
Mrs. Doubtfire - I haven't seen it ages myself, so I probably should try and watch it again some time soon. For the longest time I would look back on that film and wonder whatever became of Mara Wilson. She seemed to be in pretty much everything when I was a kid (well, only three other films that I can actually think of, but at the time that was enough to make her seem pretty darn ubiquitous in my eyes), and I recall her being quite a talented young actress. Then she just completely fizzled. According to wikipedia she currently attends drama school, so maybe she hasn't dropped out of acting altogether, though I don't know if we'll ever see her on the big screen again.
For me it was...
Planes, Trains and Automobiles
A classic comedy - good-natured, hilarious and with a healthy layer of heart and poignency beneath the two leading characters' interactions. Actually, just seeing John Candy in anything is enough to leave it with a bittersweet tinge - I still miss him after all these years.
