My cable provider gives me ~800 kbps upload, so I can currently stream mediocre-quality video to work, and do so on occasion. I just use VLC to take my capture card input (which comes from my ReplayTV) and stream at around 700k bitrate. The slingbox solution is probably a little more elegant (changing channels on my ReplayTV requires a hackish Perl script I wrote) but I don't use it often enough to spend any extra money.