Looking back at the original post... young children... Hollywood and Vine was great in 2010 for breakfast. The characters are a LOT of fun, one of the best character meals - the restaurant cast and characters dance to Playhouse Disney music with the children. DS5 really enjoyed dancing with Agent Oso and Handy Manny.
Breakfast food was very good, although it would take a lot of effort to mess up breakfast food... Did the character lunch in 2009, food was OK but limited variety and nothing special... no better than the budget buffets at home (Golden Corral, Country Buffet, etc.). Dinner does NOT have characters, did that in 2008, food just as plain and ordinary.
I think HS has a real nice mix of restaurants. For us, it's character breakfast at Hollywood and Vine, lunch at Sci Fi and Prime Time, dinner at Brown Derby... of course not all in 1 day.... We went to Hollywood Studios a few times last trip (partial days).