Bashcon 26 - The Search for More Money
Bashcon 26 - Finally moving out of our parents basement.
Bashcon 26 - Because hell, it's about time.
(And now, more seriously)
My first thoughts would be Olde Tyme Gaming (everyone in black&White, old school game themes)
Mebbe if you want the Cthulu thing.. BASHnomicon?
How about XXVI Victus Bashconicus? (Victorious Bashcon! Roman Legions!)
Bashcon - The Next Generation?