The Ultimate Collector's Series, or UCS, is a LEGO subtheme of Star Wars introduced in 2000 and was meant to be more detailed and aimed at older builders. These Ultimate Collector's Series sets tend to be larger, and more expensive than typical sets.
2003 LEGO Sets
While 2003 proved to be a financial disaster for LEGO we did see a number of signification events that set the tone for future LEGO recovery and investments. Most important, LEGO introduced new realistic minifigure skin tones that affected licensed themes including Star Wars, Harry Potter, Basketball, Ferrari and Spider-Man, but kept yellow skin tones for all other minifigures. In 2003, the LEGO minifigure celebrated its 25th birthday with just under four billion minifigures being produced. LEGO that year introduced a number of new themes including Clikits, Designer, Sports which consisted of hokey, basketball and Gravity Games, World City and 4 Juniors which replaced the Jack Stone theme.