yay!! leslie rocks!! she's so funny when she's mocking of Sheldon!!

I think its amazing how you can argue the most complex of physics, with simple common sense! its amazing and I would love to see more of it!

leslie gets on my nerves

Hehehe. He almost sat on her head to watch Dr Who! I LOVED THAT! Lolz :D

This is a complex question for me and a good one to ask. I love the interaction with Penny because there's love there for Sheldon even if he is a Wackadoodle it's unconditional for Penny. Leslie knows how to fight and Sheldon truly sucks at it and it hurts me to see someone go at him on any level. He means no harm by seeming so pompous he's just being factual and informative regardless of the social implications as he has no grasp of them. High functioning aspergers I would say. She's just a bitch without an excuse.

Sheldon: “Leonard is upstairs right now with my arch-enemy. … The Doctor Doom to my Mr. Fantastic. The Doctor Octopus to my Spider-Man. The Dr. Sivana to my Captain Marvel. … It’s amazing how many super-villains have advanced degrees. Graduate schools should probably do a better job of screening those people out.”

I love their feud, lol.

He prefers Penny so there isn't as big a feud between them as Leslie.

Sheldon still gets along with Penny, so it works, right?

Although I love his feuds with Leslie, too.

;) fUNNy!

I like Penny.. so it's kinda sad to see her "sort of" lose to Sheldon most of the time. I think her spitting on his food or punching him is the only thing she could really do.

To be truthful I don't really think Sheldon and penny have a feud I think they're just playfully arguing. Or penny is Sheldon doesn't 'play'

Leslie irritates me.

It was so funny that leonard gave penny sheldon's mum's number to get him to apologise. I think on some level he knew it was leonard that gave it to her.