Some Streaming and Compression Companies to check out at NAB are Telestream, Sorenson Media, Wowza Media Systems, Digital Rapids, Inlet Technologies, Kulabyte and HaiVision. Wirecast is the must see tool if you visit the Telestream booth. Sorenson Media is always a must see for NAB. Wowza Media Systems has new server developments and Digital Rapids has automatic publishing after encoding that you definitely should see.
Also, make sure you also stop by the Inlet Technologies' booth to view their Semaphore product. Lastly, visit companies, Kulabyte and HaiVision to check out their Live HD Encoding tools. These are only a few of the items to see at NAB 2009.