I don't collect vinyl (yet?), so that part is irrelevant for me. Also, I don't go after autographs all that often, so I really don't have too much to mention here.
One item that I do have that I'm pretty happy about, though, is a copy of Giant Squid
's The Ichthyologist
, signed by the entire band (including their touring guitarist on that run - Corey Christina Tozer). I got to meet and talk to all of the band members and take pictures with them and shit. That was a sweet evening
...oh, and I also have a copy of Meshuggah
signed by the entire band, but I didn't get to meet them (yet