Twice in Season 1 (I haven't yet seen Season 2) Barry outruns a lightning bolt (or reacts faster than the bolt itself).
The first time is in Season 1 Episode 7 (Power Outage), where
Barry outruns a bolt of electricity aimed at Dr. Wells by Blackout to move Wells out of the way of harm.
The second time is in, I believe, Season 1 Episode 15 (Out of Time), where
Barry pulls Joe out of his car when Mark Mardon manipulates the weather to destroy the car.
Both times, there's a bullet-time sequence that shows the bolt of lightning slowing to a crawl in mid-air - Barry then outruns the bolt, or reacts quicker than that speed.
According to Google, the speed of a bolt of lightning is 3700 miles per second (or 224,000 miles per hour). Barry, in these episodes, has only reached speeds slightly higher than the speed of sound, which is above 700 mph.
I'm sure I could come up with a fan reason for this (as I'm a nerd) if there was a moderate jump in speed, but there's quite the discrepancy here. Granted, he's the Flash, and we know how powerful he's going to become - but is there any canon reason that Barry can perform these feats at this point in time? Or is it just an oversight by the writers for Rule of Cool?