Jamie and Fat!Lee
Here's an excerpt from an interview with Jamie in Gateworld
JB: I thought it was a great idea as soon as I read that I had to wear a fat suit. How else will you do that? Change the physicality of the character, and to suddenly go to a different mental place as well. I thought it was a really interesting, bold decision from the writers.
We jumped a year -- not even in an act break; it was in mid-scene! We panned out on Baltar and suddenly it was a year later, just before the season ends. I thought it was really bold, really striking.
GW: You enjoyed the year gap. I've had people wondering does Apollo find Jenny Craig sometime soon, or does he stay chubby for a while?
JB: He definitely does find Jenny Craig. His weight problem is not a problem. The idea was initially conceived because Apollo -- I'm going to do my Australian accent because Michael Rymer thought about this and it was his idea to put on the weight.
[Cue a very decent Australian accent] What happens when people go into sort of long-term relationships? Well, you know they don't need to work out so much, they get fat and comfortable. And that's what happens to Lee. He's on the Pegasus. He's the commander now. He's not flying vipers day in and day out. He's more desk job. He's commanding people, strategizing. And yet there's nobody to fight. There's no Cylons. He's comfortable with Dualla. They, she's kind of his XO on Pegasus. They have this perfect little world.
But how it actually plays out in the end ... it's not perfect. Lee needs the fight. He needs the challenges. He rises to becoming a commander and he's born to do it. He realizes that he's more like his dad than he ever thought. But at the same time, what's the point in becoming the commander when there's no Cylons to fend off?
He's a little depressed. And he's had this whole bust up with Starbuck that you don't know about, that you're not told exactly what it's about. And that's really the reason why he's put on weight. It's a psychological thing. A kind of depression.
GW: He's got an empty command.
JB: Yeah, he's got an empty command and an empty life. Even though, supposedly on the outside, he's fulfilled and happy.
....
JB: Depression is something that happens to people when -- like Lee Adama -- when they've got nothing to do. When they're bored and there's nothing to fight for. When you have to fight for survival, you don't get depressed.
(Here's a link to the whole article)