Maybe it was investing guru-shouter Jim Cramer's doing, - touting BlackBerry stock as one that will go up as soon as the Verizon BlackBerry 8700 and a rash of customers for the device hits the stores- but BlackBerry-maker Research In Motion's stock sure must have eaten their Wheaties this morning.

At the close of today's trading: prices looked like this:

Nasdaq (RIMM)- $64.40 a share, up $1.54 (+2.45%)  from Wednesday's $62.86 a share close. Trading volume was a quite lively 4.929 million shares, compared to RIM's three-month average daily trading volume of 4.275 million shares.

The stock price rise in Canadian trading was even greater in comparison:

Toronto Stock Exchange (RIM) $72.11 (CDN) a share, up $1.97 (+2.81%) from Wednesday's $70.14 (CDN) a share close.