I found it quite light-hearted and silly, and I strangely found myself wishing I'd had someone with that outlook when I was living my corporate life ("Who wanna come with I?")
I probably helps that I know quite a few Jamaicans, including a few white folk who use the same patois, and I don't know that any of them would be offended. I did not see any evidence they were being made fun of or insulted in any way - just imitated by a well-meaning goofball. If we're going to take offense at this, we'd better take offense at every Caucasian in a commercial who uses hip-hop slang as well......and that's nearly all of them (KFC commercial, anyone?)
Gonna go put on Toots and the Maytals now.