I have heard of people running Excel on Ubuntu using Wine, but my impression is that this can be more frustrating than it's worth. I suppose the top alternatives are to either just run Windows or else use something like OpenOffice.
Has anyone successfully used Excel on Ubuntu, and if so, what was your conclusion?
For reference, I'm currently using Excel 2007 and recently upgraded to Ubuntu 10.04, although I would be curious about any experience with this.