I think
1) shaleen. He has successfully managed to make people forget about his domestic violence allegations by playing this comic, goofy, dorky fool who is harmless
2) stan. No one knew him. Except his followers. But he has entered into the common janta's mind as some music related biggie. He also got to do a performance on national tv last night. And his criminal past is spoken about even less than shaleen.
Anyone else? Who do you think benefitted professionally or personally from their bb stint?