Okay, so enough people have already answered this, but still: I've come across CPU's where half the pins were practically flattened against the CPU base. But with some time, patience, the blade from a Stanley knife and a good pair of pliers and a tweezer, I managed to get them all straight enough that it went straight into the socket. That was a socket 7 CPU though, with more pins in a more annoying pattern, so a few bent pins is nothing to worry about.
WinXP : PIII 1.4GHz, 512MB RAM, 73GB SCSI HDD, Matrox Parhelia, SB Audigy 2.
Win98se : K6-3+ 500MHz, 256MB RAM, 80GB HDD, Matrox Millennium G400 MAX, Voodoo 2, SW1000XG.
DOS6.22 : Intel DX4, 64MB RAM, 1.6GB HDD, Diamond Stealth64 DRAM, GUS 1MB, SB16.