Complex sentence: Key has made two other short films with Tom Basden, "Piano For Beginners" in 2004, and "The Amazing Hedge Puzzle" in 2005, both of which were directed by Alex Winckler and produced by J Van Tulleken.
Split into simpler sentences: Key has made two other short films with Tom Basden. Both were directed by Alex Winckler and produced by J Van Tulleken.