for anybody who hates turbotrainers but doesn't fancy breaking their necks riding through unlit rural areas with just a weedy bike light....
i just got a cateye stadium 3... enormous rechargeable battery that fits in your bottle cage; equivalent to 80 WATTS of halogen lights!! (ie like having 35 standard halogen bike lamps fitted)... lasts 3 hours on a full charge - and turns night into day
amazing
a bit expensive, but the best bit of bike kit in the world