Misha Collins was a great guy....my sister is a massive fan of his, so when he walked past as i queued to have a pic with Shannen Doherty, i phoned my sister to tell her that he'd walked by me and she proceeded to use a few choice words over the phone.
To balance things out, i went to get his autograph for her and was telling Misha about her swearing over the phone to me, so he wrote on her pic.....you shouldn't swear at your brother (it's f*****g rude) then signed it, which my sister totally loved.
Even though he admitted to being a little tired, he was still funny and very chatty and was a delight to meet