The Target DVD set has a bonus disc featuring a panel on which appeared many of those involved. (The panel was actually held before the final installment was completed, apparently -- and no hints were dropped regarding the conclusion.) It's light fun: nearly 40 minutes of chat.

Among the anecdotes: Masi Oka recounts his tryout for the part of Hiro and comments that, on the one hand, he was speaking in Japanese, so he could say pretty much anything he wanted. On the other hand, there is a line in the script when Hiro succeeds in stopping time. Oka says the line in the script reads [in Japanese], "Little tree." He expresses confusion, can't figure it out for a minute -- but eventually asks Kring if he can change the line to what had been intended: "Banzai!"

Hee.