A question for the science-minded.

When I use one of those ignition-trigger lighters (the long clicking fireplace lighters) to light the candle collection on top of my TV cupboard, the signal to the cable-tv is interrupted for a flicker of time. It doesn't happen with traditional flint-wheel lighters. Question #1 - Why does this happen? (Question #2 - Is there such a thing as a "flicker of time"?)

Please note - my icon is a safety precaution, what with talking about fire and all.

Question #3 - Why the fuck are Skylanders so fucking hard to find right now?