Rob a bank and use the money to bribe government officials and the CEOs of the CRAs. Heh, you didn't specify the method had to be legal.
OK, OK. Enough fun. Seriously, don't rob the bank. I understand there are laws governing that sorta thing. Same is probably true about bribery. Some people have no sense of humour.
One of the fastest ways to get a quick bump, relatively speaking, is to reduce your CC util.
Your question is very general so don't expect specific answers. Any more details you can provide will help to guide and direct you.
