I havent had any compatibility problems yet...... most of my programs that i use are digital video related.
Then again most of those programs are Apple (Final Cut Pro, DVD Studio, etc....)
My EyeTV works perfect.....
I love the new FINDER layout, it is alot easier for me to hit my commonly used folders faster on the side toolbar, and the new EJECT icon next to the optical drives are really usefull. With the little i have played with Expose` It does help manage a very cluttered desktop with multiple open windows..... I usually have both screens cluttered with stuff and i manage those windows a little easier now. Other than that, i havent gotten a chance to check out the other features...... $129.95 seems like a lot to put down for this update, but i have NO PROBLEMS AT ALL SUPPORTING APPLE with MY PURCHASE so that they will continue to bring me the best HARDWARE & SOFTWARE.
And to think for 12 years i was a PC junkie who would never switch to apple, until my friend let me borrow a G4 to create my first DVD. since then i've sold my 4 PC's and never looked back.
-Ray