The actor who played Shane McKay in Degrassi Old School is Billy Parrott:



(He's the guy on the right! )

The actor who played Shane McKay in that two-part episode on DTNG is Jonathan Torrens!



For those of you up in Canada, you may also know him as J-Roc on Trailer Park Boys!

BTW, I read that the producers asked Bill Parrott to play Shane McKay for that two-part episode ... but he declined! The jerk!