It's lovely to be able to refer to "my agent." Just saying "my agent" gives you the feeling that you're special, that you've got an edge, that you're not alone in the world. I've always enjoyed it immensely. It's sort of like referring to "my guardian angel," only your agent is flesh and blood and, you hope, bustling from publisher to publisher trying to sell your book proposal and make you as much money as he or she can.
The agent most people are familiar with is Entourage's Ari Gold (Jeremy Piven), the vulgar, hyper, fast-talking shark whose character is widely believed to be based on Ari Emanuel, founder of the Endeavor Talent agency (which last year took over the famous and venerable William Morris agency) and the brother of President Obama's Chief of Staff Rahm Emanuel, also reputed to be a vulgar, hyper, fast-talking shark.