Grace Under Pressure was the first Rush album I ever heard, lent to me by a friend in 1989...then I went searching in second hand record shops and bought everything they'd ever done, and continued to buy everything they've done since!
My favourite song on the album now is Afterimage..because the words mean a lot to me after losing someone very close to me earlier this year.
I love the whole album though...just because it was how I was introduced to Rush...I never tire of listening to it and have the video too