Among our party at dinner on Sunday night were some hard-core professional sports fans. One guy's cellphone kept making noises, and he explained that he had it programmed to alert him to goals, touchdowns or other significant plays made by the teams or athletes he was following (each on was assigned a different tone, which he had trained himself to recognize). I was fascinated by his level of devotion, which I don't think was financially motivated.
Another man at the table said you can actually buy (or rig up on your own) a wireless strobe light and siren combo that signals every time your favorite ice hockey team scores. His wife sensibly pointed out that such a gadget would cause some major household friction if the team is playing a West Coast game.