Ah yes, my favourite occupation. Every time (this applies to everywhere I've worked) a new marketing manager/CEO/receptionist/etc comes in, it's ooh, we need to change the website. Even better, it's then - ooh, we need to change our application UI to reflect the new branding. Then of course, one customer will ask for a new feature, to which Sales will say, "Oh, that's not a problem". Cue another change to the UI. Then of course, every release will have new features (whether useful or not) and the UI design will be changed (whether necessary or not).
Of course, now everyone is all cloudy, the changes are pushed out to the unsuspecting users and they'll find their familiar UI has changed literally overnight, whether they want it or not. On the upside, I've got a job for eternity (well, it sure as hell seems like it).