Transdroid is an Android remote client for your torrent application running on a server or home computer. Currently Transmission, uTorrent, Bittorrent, Deluge and rTorrent are supported. It can show the active torrents, pause, resume or remove them and new torrents can be added via URL or as an extra via an isoHunt-powered search.

The application is in extensive development and is open-source and free.

http://code.google.com/p/transdroid/