2. The office admin staff. If you've ever been one, you remember how invisible higher-ups love to make you feel. You also know they have more dirt than anyone else. Be the first to mentor them by taking them out to a lip-loosening happy hour.

3. The IT guy. Not just for what he can do for you, but what he won't do. Like rat you out for wasting five hours on funnyordie.com when your boss was away.

4. Your boss's assistant. Any gatekeeper to VIPs should be handled with kid gloves. You want her to put your calls through and champion you when your name comes up in conversation.

5. The old-timer. If he senses you don't think he's obsolete (like the rest of your peers do), he'll let you in on a wealth of information about how to weather company politics. After all, he's been there since the Great Depression. He's gotta be doing something right.

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