Nope, unfortunately not. But what i have seen an Android device doing instead:

- waking me up reliably, instead of deciding an alarm tone is unnecessary right now and i should enjoy my sleep

- can transfer / accept files over BT (ok that's debatable because it affects only certain N900 configs - but then you have to decide: IrMC/PBAP support, or BT file transfer)

- syncing multiple(!) calendars without a hiss, instead of having to perform some occult ritual on convoluted syncconfigs in order to be able to do so, and even then dropping out randomly

- on that particular topic: many alternate calendars available

- a multitude of stable mailclients, instead of having only two where one of them (the actual usable one, with needed features, let's call it 'claws-mail') crashes (un)predictably in every available version, and the other one - modest - is crap anyway

- talking via Skype when the other party is not on a laptop / desktop using LAN or WiFi, but instead UMTS, and you still can hear them after some minutes without noise bursts or dropped connections (it's a known issue with the N900, i hated it so much that i solely used the Touchpad for Skype after i got it - same connection / same endpoint was trouble-free)

- instantly alerting calls / the caller UI is fast enough, so that you don't miss them because the other party has already hang up in the meantime

- up2date browsers that don't have issues with certain encryption standards / setups, with functional Opera Link (both related to Opera) or are dog-slow (Fennec)

I guess it's a decision to be made what you have to rely on more... good task / process management, or being able to use the device truly for PIM