] Nextel Wireless Broadband%u2122 is a new service brought
] to you by Nextel. Using innovative technology based on
] FLASH-OFDM, the service offers secure, IP-based broadband
] access over a wireless connection.

Just starting trials, but sounds neat. Big downside, of course, they're not likely to ever support your non-windows OS of choice.

Nextel Wireless Broadband - Overview