Actually I just watched a few more episodes I recorded and Kutcher is doing a pretty good job playing a "Gracie Allen" type character. True it's a rehash of Kelso, but it's hard to play a bit of a scatterbrain without coming off as "plain old dumb" as Suzanne Somers's - Chrissie, Beth Howland's - Vera or Betty White's - Rose did.
It really has evolved into a different show. It's kind of like when Ann Sothern got into a dispute with "Private Secretary" producers and basically took the whole cast and put them in a new show. Or when Andy Griffith transformed into Mayberry RFD.
The only thing that really bugs me is the way the characters don't seem to show any concern or care over Charlie. I know the show was never big on sentiment but his death is coming off as way too callous from Alan, Berta and his mother.
Over time, I don't think it'll play well. It's like on Petticoat Junction when Bea Benaderet died and they sent Kate Bradley away with a toss away line, "she's traveling" and it was if she never existed anymore. It seems crude to treat a major character.
It's one thing like with Floyd on Andy Griffith, they could toss that character away, as it was a featured player and not a major character.
I think they need an episode to address this.