My first team still exists as solo characters - I mained a warlock in bc and my wife mained a resto Druid, I used her Druid, my warlock, my priest, and a prot paladin to run old raids and heroics, farm cloth, and do the shattered sun dailies ( on mal'ganis at the height of its power as a PVP server). This was done one three computers, with keyclone.

Now my warlock is my bank character, my priest was my main for half of mop, the Druid is retired (but 90) and the paladin has challenge mode gear.