Letter from him, with photo attached of you and him in a bear hug or something like that.
[INDENT][I]“Warning: Bear Hug Alert Issued In Florida”
"This is a recent pic of me and a good friend of mine, Phil Ruthven. He’s a little on the wacky side, but now, after knowing him for 4 years, 3 months, and 17 days, I can honestly say that he’s a solid, lovable, and hilarious guy. He also happens to be an Obsessive Compulsive Window Cleaner, and gets a little crazy when it comes to making sure that every window he cleans is perfectly spotless and streakfree. He cleans my windows in fact, and just yesterday, I walked straight smack into my patio door.
Thanks Phil.
Anyway, I was thinking that since your home has lots of beautiful windows, that you may be interested in knowing about Phil. I told him about your place, and he’s agreed to give you a special “premium upgrade” from his “Basic” window cleaning services (washing the glass perfectly) to his “Premium” window cleaning services (glass, frames, sills, tracks, screens) absolutely free.
Unfortunately, Phil is so good that he’s booked solid, like into June 2011 or something (okay, not that far), so he can only make room for a few more clients in the next month or so.
If you’d like to get a free, no-obligation estimate from him, just give him a shout at xxx-xxxx before Jan 24th, and make sure to tell him that “______ sent you!”
Oh - and of course, being the stand-up guy Phil is, he’s always done business as a straight shooting, stand-behind-his-work kind of way, so if you’re not totally satisfied with either his work or the entire service experience, you simply won’t have to pay.
That’s just the kind of guy Phil is. 
Anyway, he’s around, he’s working 10 hours a day in the area, and he’s available to you until Jan 24th, for the free upgrade that I just talked about, so give him a shout when you have a minute, or email phil@________.com
See you next week, as usual!
P.S. Your lawn is looking great these days, isn’t it! I’m a little jealous."[/I][/INDENT]
Maybe something like that.
I just wrote it all as a first draft, but hopefully it’ll give you some inspiration.
Kevin