So I go into Toby's office to tell him I'm heading to bed. He's playing Dead Space 2, totally focused on the screen, wearing his earphones that block out environmental sounds. There's no way I can touch him or say his name in a way that will not startle him. So I go back into the bedroom and text him.
When he comes over, he thanks me for that decision. :)
(DS2 is a horror first person shooter, if you're unaware.)