I am quite the fan of the original. Get the DVD, it's far better in quality than what Five are broadcasting.
The remake wasn't too bad, but like most remakes, the original is far superior.
I'm just looking at their print of The Towering Inferno, it's mediocre at best. I have the 2-disc Special Edition DVD and it looks and sounRAB great. I really don't see why a splendid film such as Inferno should be treated so poorly. It isn't even being broadcast in widescreen which quite frankly is a disgrace.
Showing a film of this caliber today in 2008, in full screen, is utterly shameful. Full screen is the 1:33 aspect ratio for a square shaped television, which no film shot in widescreen should ever be shown in, this day and age.