Your weekend will be above average should you pick up the new expanded editions of all three albums by Canadian instrumental rock band Shadowy Men on a Shadowy Planet. The Toronto-based trio–drummer Don Pyle, guitarist Brian Connelly and bassist Reid Diamond–formed out of punk outfit Crash Kills Five in 1984. Their catchy instrumentals and unique DIY-style releases (one EP was sold on a package of Jiffy Pop) guaranteed them cult favorite status, but it was “Having An Average Weekend,” the closing track of 1988’s Savvy Show Stoppers (an album of single and…