Oddly enough, it's still on Comcast where I live. Glad I got to catch it when I did. It's the best Season 4 episode by far.
Viva la Sharkhead and Purple!
Seriously, though.....I think this was one of Bloo's shining moments. The entire sequence between Mac and Bloo once Bloo starts his
Spoiler Below House for Imaginary Friends
has to be one of the best "back-and-forth" moments between Mac and Bloo in the entire series, in my honest opinion. I loved every second of it, and, in a way, wish I was watching it again right now.
By the by, I was about to say I could've watched an entire episode of Bloo just doing the whole Sharkhead and Purple schtick, but I really just did so that would kinda be repetitive.