Speaking of speed...

I'll shortly be setting up a gigabit wired network at my new house. I want to do the whole jumbo packet thing, now that it's become cheap to get 8-port switches that support it and it seems to make a sizable performance difference for file servers. The rub: if you try sending a jumbo frame to somebody who can't handle it, they just drop it. So, how am I supposed to integrate this? My concern is that my WAN/LAN gateway and/or wireless base station might drop jumbo frames if they're not jumbo-aware or something.