SymTorrent is a cool BitTorrent client for Nokia N8. You can download multiple torrents with this software and you can pause or resume the downloads. Torrents can be started from the internet browser. Remember this is free and it's open source, so please support the developers on their website.

ps. It seems that this torrent software can be found only at the link above, because OVI Store has removed it from its database due to some music copyright infringement.