[Tual]

Here are some I used when I still played the POS:

Farcaster's Event Attendance - vBulletin.org Forum
Farcaster's Event Attendance & vb Event Forums Integration - vBulletin.org Forum
Embed XHTML valid YouTube and Google Video into your posts - vBulletin.org Forum
Form Hack - vBulletin.org Forum
Thread Prefixes - vBulletin.org Forum
Separate Sticky and Normal Threads - vBulletin.org Forum
vB Event Forums - vBulletin.org Forum
World of Warcraft Recruitment Status Module! - vBulletin.org Forum
Profile Fields in Postbits - vBulletin.org Forum

As for a gallery: PhotoPost PHP Website Photo Gallery With vBulletin Forum Integration rocks, but it's not free (and got a lot more expensive when photopost took over from vBadvanced)

Hope they're of any use to you.