No. I don't think it's in the interest of this committee to get into the specifics of the file formats one should publish in, but I think there are a lot of good practices out there. For example, if you look at the City of Vancouver's open data portal, very frequently they will share data sets in several different types, in several different formats. That way the user can choose the one that most fits their need. It means that you can use it in formats that are broadly more open, but if you want a format that's more closed you can do that too.
On January 31st, 2011. See this statement in context.