Kevin & Kell for 2/16/2013:
Note that the well-known quote from The Office, "Is there no limit to what he won't notice?", works differently.
But this example, from E. Phillips Oppenheim's "A Lost Leader", is similar:
"You don't understand his importance to us," Borrowdean declared. "This is really no light affair. Rochester and Mellors both believe in him. There is no limit to what he might not ask."