Hugh Laurie.

“Get stoned, open the fridge, find the frosting, shove something chocolatey in the frosting, and consume. Delicious.”
Never a truer word spoken.

I did rewatch it just last night and was struck by what a fitting postscript to the series it is. The series ends on a perfect but sombre note so it's fun to get one last grand adventure with the crew. And that last shot of Spike catching the butterfly might be every bit as poignant as "Bang".