Oh, I always appreciate comments, even if it’s just flailing at each other. :D
I started Alias on a weekend season 2 marathon (didn’t watch all of season 2, but I loved what I saw), just before local cable started on season 3 (it was a year behind the US) and I “caught the bus”. A few months later, I started buying the DVDs, and at that point I watched it all the way through once, I think season 4 was released just as I was finishing and so went on to that. And then I watched 5 as it aired in the US. Since I’ve rewatched eps here and there and rewatched season 2 at least once, or at least most of it.
Season 2 is my favorite because of Irina.
As for shipping… I think it was because I really started in season 3, I was never really into Syd/Vaughn, but watching season 1 in particular I can TOTALLY understand why so many people loved the pairing so much. Myself, I was totally into Jack/Irina. And then in season 5, I was all over Sark/Rachel.