The Canadian singer and TV personality was best known to game show audiences as the host of the long-running daytime game show 'The Mad Dash' (1978-85). Teams of two (contestants from both Canada and the US could qualify), most often couples, played against each other, alternating between answering general knowledge questions to earn rolls of a dice, and running around on a giant game board based on the rolls of said dice. They could win cash and prizes which would have been considered laughable compared to today's SyndieBAM-fed audiences ('You've won a new sewing machine!'), but for the time they had some pretty good payouts, especially when someone landed on the 'Pot of Gold' space and won a deluxe prize package worth at least $1,000. Even Wink Martindale was impressed - he uploaded a full episode to his YouTube vault (pardon the picture and sound quality).
http://www.youtube.com/watch?v=ULvCRt_AykE
Another clip (better quality) featuring a nice 'Pot of Gold' win, and a couple of amusing brain-fart moments (the dog and parrot question is classic gold
And since it's a morning quizzer, not everyone stayed up late and watched Johnny and Ed back then 
).http://www.youtube.com/watch?v=B_4nfLTBCoA
Lalonde also hosted a Canadian French language version of 'Chain Reaction' ('Action Réaction') that managed to stay on the air for five seasons (1986-1991), leaving both GSN versions in the dust.
'Action Réaction' Clip (first minute of a round)
http://www.youtube.com/watch?v=Jd05vnXsKHc
More clips from both shows are just a Google/YouTube search away.
Canada just doesn't do game shows like this anymore.