Hi all.
“By Cracky!” is this week’s puzzle title and each theme answers gets a “BY” added at the end with humorous results.
17a [Sport in which the term “Hail Mary pass” is meant literally?] – PRAYER RUGBY (Prayer rug)
25a [Guy cooking dinner for his wife?] – GRUB HUBBY (Grubhub). Grubhub is a food delivery service which is available in Canada.
37a [Failed to identify a blue-footed bird?] – DIDN’T SAY BOOBY (Didn’t say boo)
50a [Enter kitty in the 100-meter dash?] – RUN A TABBY (Run a tab)
59a [Pokey’s overweight, sunburnt sidekick?] – BIG RED GUMBY. I believe Wrigley’s Big Red gum is still sold in Canada but I haven’t checked in many years. Gumby and Pokey was a long running clay-animation series.

Canadian content
63a [Home prov. of “Bud the Spud“] – PEI. Prince Edward Island. An argument can be made that Stompin’ Tom Connors is the greatest Canadian singer ever.
4d [Street in Toronto’s financial district] – BAY. Equivalent to New York’s Wall Street.
6d [To be, in Terrebonne] – ETRE. Terrebonne is a Montreal suburb.
10d [Blue Rodeo song that begins: “Don’t tell me I’m wrong”] – TRY. More great Canadian music.

Tip of the Week
Well, more of an observation than a tip. This puzzle has 18 B’s, an unusually high amount.
See you next week. By-Bye!