I just want to make a list of all the awesome Orky conversions/posts I've found to keep ideas fresh in my mind when I want to look back on them for ideas and inspiration.
http://www.dakkadakka.com/dakkaforum/posts/list/139987.page Ork Warboss modeled from a figurine from a different system.
http://www.dakkadakka.com/dakkaforum/posts/list/178089.page Steam Stompa.
http://www.the-warforge.com/index.pl?warphead Amazing Weirdboy... Ein's stuff is legendary.
http://www.the-warforge.com/index.pl?zagstruk Very original Stormboyz with unique rocket setups and poses.
http://www.dakkadakka.com/dakkaforum/posts/list/240961.page Big Daddy Killa Kan.
http://www.dakkadakka.com/dakkaforum/posts/list/241956.page Vendetta with an awesome paint scheme.
I'll try and update this as much as possible everytime I find another cool article/website/project.