It IS a hard meme, isn't it? I mean, I like a lot of best friend ships too, and that PLUS the fact that pretty much every show I can think of that has a significant male-female relationship (that isn't a familial one) generally gives it some tinge of romantic meaning...I found it so hard to think of ten totally platonic male-female friendships (I cheated by including Deb and Dexter in my main list - I can't believe you managed to scrounge up enough examples that you managed to make Deb and Dexter an honourable mention!).

I like your no.1 a lot. I always remember Dan pointing out the huge, enormous flaw in Dana's dating plan to her - I really love that episode...

Your no. 4 tickles me - that was totally my ship on BtVS! :)