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I've never met Luke in person, even at theatre, so of course I don't know him well. I just guess his personal life, thoughts, favourite things, etc. from his interviews, articles, and some information from my favourite web site Luke Macfarlane Online.
I know it sounds weird, but if I smoke I feel like I'm related with Luke by something. As of today, I haven't started smoking again yet, I'm not sure I won't smoke again. I
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When I saw him coming back to Brothers & Sisters in Season 2 Episode 3, I was jumping up and down on a sofa. I haven't checked any website at that time, so I didn't have any idea of his coming back. It was a big and happy surprise for me. There was an appearance in Season 1 Episode 14, but it was obviously as one night stand like.
And then he became a regular in Season 3. Actually I'm not satisfied with their storyline lately, because I don't like these things, such as Kevin works for Robart, Ryan shows up, less Scotty, and etc. But Brothers & Sisters is the only show I can see Luke right now, so I hope they'll announce about Season 4 soon.