http://www.agdinteractive.com/
Quite neat stuff, I just wanted to post this in case you are all upset about the Lucas Arts announcement, this is something that should calm ya down.
Also Direct2Drive is selling Sierra Adventure game collections, they might be ok too.

Wow, Thanks for that!
If Andy_Panthro hasn't already seen this, you'll make his day too !

Been going there for a few years now, there have been some fantastic adventure games released with this engine.
http://www.adventuregamestudio.co.uk/
I didn't know the sierra adventures were being sold online. Great games if you can get past some serious bad design/very unforgiving dead ends on a few of the titles.

Played all their remakes.
Currently replaying King's Quest II because they've updated it a bit since the last time I played it.
I'd also recommend http://infamous-adventures.com/ for their King's Quest III remake - it's fantastic. They're currently working on Space Quest II, although it may be many months before they finish it.
[edit] didn't see that about Direct2Drive, I bought the Kings and Space quest collections about a year ago (boxed), are these the same collections? I didn't buy the Police Quest one you see, and I kind of regret that. I'd also love to see a QfG collection back.
Hell, they should just sell them all on here. I'd buy them all for the second, third or fourth time.

I first played King's Quest in about 1987-88, so have been a Quest fan for a long time. Also, AGD interactive have been around for many years now. They've got a bit more press this past year since they released their QFG2 remake and the updates for KQ1+2. Can't wait to see what they're planning next, but I imagine they'll have a little rest!
They also have their own original game out as Himalaya Studios: Al Emmo and the Lost Dutchman's Mine.

I had a good look at that this morning, certainly piqued my interest!
It's on my radar to pick up :)