The least good song in my books is St.Jimmy, but it still awesome.
And to me Whatsername is an awesome closer, and to be honest rhyming doesn't bother me at all. And I just can relate with it, objectively I realise it is not that creative, but it strikes a chord with me and subjectively it is my favourite on AI. Taken alone many songs beat it but in its context Whatsername is perfect.
Especially that last part that seems to be about coming in terms with one's past and realising that it will never come back and actually one doesn't even want that.
That seems to be a perfect closer to a perfect album, right?
When it comes to Bowie, take a heed of this word: Berlin.
Honestly. A trilogy that actually is awesome from start to finish.