For the 210,000'th block lets all make transaction with high transactions fees, to additionally reward the finder of this block;
I know, not really useful but i think a nice gesture and also the block will be "marked" in many diagrams as a spike of transaction fees

Who is with me?
Just book a transaction after the 209,999th block is mined from one own address to an other address you own and set higher than usual transaction fees.
Additionally you can proudly proclaim that one of your transaction is recorded in the first-ever 25BTC-Block, if that isnt something?