• #bittorrent on irc.freenode.net - NOT for discussion of where to get files, only tech support and related questions.
• #suprnova.org on wikked.irchat.tv
• #bt on EFnet
• #tvtorrents on EFnet - see also the www.turok.info website.
• #bittorrent on IRCnet
• #bittorrent-games on irc.irchighway.net
• #scifi-torrent on cyber2k.net

A more complete list of torrent-related channels can be found on this page as well as this page. Additionally you can search for torrent channels using netsplit.de and searchirc.com.