A new character, promising, hope we see more of her.
My only gripe is that we are left to assume that the problems Leonard and Penny were having seem to have been sorted out, which begs the question: why did they leave the previous episode open ended?
Loved how Leonard tormented Raj in this episode, disliked the Amy-Penny storyline UNTIL Penny actually spoke to the new assistant, Alex. The Howard storyline was hilarious, especially his deranged whisper of "They left dogs up here in the 60s". I feel cruel saying it but I'm glad space didn't turn out well for him.