Continuity mistake: When Dylan leaves the Angels, she returns the stuff that she has borrowed throughout the years. This includes a letter. Look carefully at the position of the writing on the letter. When Natalie and Alex find the box just after, the writing is upside down.
Continuity mistake: When the bombs go off on top of the rooftop, Madison's telescope has disappeared.
Answer: Bill Murray played the character of Bosley and it was no secret in terms of the gossip from the entertainment shows like Extra, Access Hollywood and so on that Bill and Lucy Liu did not get along. From what I heard this was the reason that Bill did not reprise his role in the second film and Bernie Mac took over as Bosley.
Tobin OReilly