There are several options for this, but I would imagine Insteon is the one most used by the folks around this forum.
IOLinc garage kit
Insteon switch or module or outlet, depending on application (table lamp? fixture?)
using my Android smart phone through home WiFi system:
For this you would require a network-enabled controller, such as smartlinc or ISY-99
I also suggest a couple of access points and filters (for any potential trouble-causing electronics).