I'd thought that he'd totally gotten past just being physically attracted to Penny and genuinly liked her, but that episode he just seemed to go a few steps back. But partially I think it was just that she was new, and he'd get over it after a while. I just hated "don't nag me!" and how he just seemed to not care that she was around. I'm glad Alicia left...I actually blame her more than Leonard. When they first met her attitude is totally "whatever" and then suddenly it changed-like she realized "hey, he'd be easy to take advantage of." So part of my frustration is with her.

oh come on. its not like penny never flirted with other guys. if shes allowed to, so is he. i didn't like how lusty he was however, but he had no obligation to penny that would make me mad at him for trying to make it work with alicia. she rejected him plenty of times, and once she realized that he wasn't into her, suddenly she wanted him. i don't really like either of their behaviors, but dont' go blaming leonard for a 1 episode deal when penny has done the same things in a way in multiple episodes. i hated alicia.