what is the best way to animate a light turning on and off?

just want to have my light turn on, flicker ‘on off’ for a second, then be turned on. should i use some type of layer key? i’ve never fooled with layers before.
i guess i could delete the light then re apply it at a later frame.
what would you guys do?

Keyframing…

in the materials window for the lamp, press [i] then select energy…

move to the frame, turn down the energy, press [i], energy…

etc. etc. etc.

i hope this helps…

~Delta

thank you. that worked perfectly.