(Image credit: Future) Valve, you cheeky bunch. It wasn't enough to stand out by doubling down on touchpads, going all in on gyro, and sporting TMR joysticks: the new Steam Controller also has an Easter egg. As discovered by user RF3D19 on Reddit this week, the $99 gamepad is capable of expressing panic. When suddenly dropped, the device occasionally lets out a wailing Wilhelm scream. You know the one . When PC Gamer's Josh Wolens strolled into the chatroom to share this discovery with the rest of the class, I was doubtful. Anyone could've faked the sound effect in this brief 2-second video or specially modded their controller to scream, but others in the Reddit thread insisted it's legit. I wasn't terribly excited to conduct my own test with the controller I just opened last week, but everyone insisted I'd get a Wilhelm from even light drops onto padded surfaces… Mine only screamed once at first and then went silent for several more unwise drops onto its back triggers.…