I think that what Nahkranoth is talking about is something akin to the functionality in Excel, Calc and Gnumeric called 'Freeze Panes'.
Pics always help.


Nine cells, displayed normally. If I scroll, they all move.

The same nine cells, but with a split between A-B and 1-2. If I scroll now, the cells in column A and the cells in row 1 don't move, but the rest of the cells do. In other words, column A and row 1 are always visible. (If you're a web developer, just think position:fixed and you'll get it.)
As far as I can tell, what Nahkranoth means is that you could make channels 1, 2, 3, 4 and 5 always stay in view, whilst the others scroll around horizontally. I think that it would have to be all channels from 1 to
x, because having fixed channels in the middle of the lot wouldn't really work, IMO. But that's not a huge problem given the channel manager.
And for those who notice that the headers aren't anti-aliased, and the cell font isn't subpixel hinted, and recall my desire for nice antialiasing, I should point out that the problem is OpenOffice.org's use of a statically linked Freetype library, which means that my Freetype settings (used in the rest of my Linux box) aren't applied.