MCT now
I've applied to become MCT, and now have 3 extra letters to go with the pile I already had. That makes it MCP, MCSD, MCAD, MCSD.Net, MCTS, MCITP, MCT. MCPD will come soon (with beta exam results hopefully), and I might do MCDBA with some of the vouchers, even though it's been superseded by MCITP.
MCLC is an interesting one. That's Learning Consultant. For people who train and also consult. So I figure that's something worth applying for some time. It's not available in Australia yet though. Plus, you have to be an MCT 'in good standing', not just a newbie MCT.