Conversation so far:
Is Angel the name of a show?
spin-off series, Angel.
How popular was this show?
it was criticized as being lesser than its parent show.
Can you tell me some things about this show?
progressive version of the archetypal noir hero as a sympathetic vampire detective.
Who were the stars?
CANNOTANSWER.

Question: Is there anything else important about this show?
Self-contained rewrite: Besides the plot, is there anything else important about the show Angel?