The Wire

Bashir fights to save his Cardassian friend Garak, who is slowly being killed by a brain implant to which he is addicted. In order to find out enough about it to help Garak, Bashir has to dig deep into Garak's mysterious past and uncovers some surprising secrets.

I like this one a lot. Garak episodes are always good!

"I offer you a Vulcan prayer, Mr Suder. May your

death bring you the peace you never found in

life." - Tuvok.