Those who complete (compleat!) the Munros can record this fact and receive the magic number by writing in to The Clerk of The List (See here). Additionally, a list of current compleaters is published annually in the SMC Journal.
Margaret & Douglas Cameron - 3636 & 3637
29th April 2006 - Sgurr Eilde Mor
That's Douglas, standing 4th from left in dark shirt, with Margaret next to him in a light blue top