GPS sat nav handheld devices with built-in spot messenger functionality. Epic! Starts from $550. Ideal for the true outdoor adventurist. Twitter just went global.
A small satellite pager ($170) which offers tracking service ($100/yr) and a mapping service (map your location, $50/yr) and other emergency contact features.
A thread I started on how to measure ssh bandwidth usage for evaluating satellite internet on the ubuntu forums.
All sorts of expedition gear, including satellite phones / broadband, solar charging systems, cases, and much more. Very useful resource, all items are priced. :)
Satellite phone reseller including online pricing of their airtime plans and units.