I added that nice little link to Rick Mercer's Blog a couple of months ago, and I just want to be sure you're using it. He stopped updating about that time, so you might have given up on checking it but, honestly, that's what an RSS reader is for!
He's back and he's in fine form. Just a teaser, in case you're not convinced:
Once you get past all the fun with photoshop, you'll find an uplifting summary of his recent trip to Afghanistan, which is well worth reading.