sp_MSforeachDB - skipping databases

SP_MSforeachDB is awesome - an easy way to walk through every database and run some code.

But what about databases you don't _want_ to touch?

sp_MSforeachdb 'if ''?'' NOT IN (''tempdb'',''model'',''a'',''b'',''c'') 
--sp_updatestats required after reorg, but not after rebuild
begin 
use ?
exec sp_updatestats 
end'