Any one catch some of the names dropped on Leverage tonight?

when Sophie and Hardison go into the mark's Office they ID themselves as Emily Peel and Jonathan Steed, and Parker's Mentor is named Archie Leach. (Steed and Peel were the lead characters on the UK Series the Avengers, and Archie Leach is the Real name of Cary Grant) I'm wondering if this is a new thing for this episode, or have past aliases and guest cast had names with a similar "heritage"