The exact same thing could be done -- however, I would suggest using an absolute path to /home/myuser/bin/tape instead of a relative path. Although /bin is in your $PATH, /home/myuser/bin will not be unless you added it manually to your $PATH (and even if you did, your $PATH will not survive a reboot, so you'd have to create an entry in ~/.bashrc to add the directory to your $PATH). I also think it's just not worth it when you can just use an absolute reference. Something like the following would do nicely:
$ crontab -l
00 21 * * 1-5 /home/myuser/bin/tape 20 Voyager 01:00:00
Assuming, of course, that your script can do something useful with the arguments provided (I'm assuming it tapes Voyager on channel 20 for one hour). `crontab -e` will let you edit your crontab, just as in Ubuntu.