If you teach English to adults and you're looking for the "next big thing" in the way of coursebook materials, I suggest you check out Global - the new series from Macmillan.
It's a beautifully done series, with some exciting stuff in the way of multimedia and social media applications, and some excellent features that really emphasize English as a global language.
I've put together a very brief review of some of the things I like about the coursebook unit format in the screencast below:
My wife, who is now studying English as a migrant in Australia, loves the look and feel of this book. I'll be tracking down its availability here Down Under and hope we can use it together to help her enhance her English (and study) skills!
Congratulations to Lindsay Clandfield (lead author of the series) and Macmillan for putting together a fine and quite exciting piece of work. Nice going!