Lot of people posted their lists here. So here goes mine:

- Opera Mobile - faster then MicroB and flashless
- Catorise - to have apps nicely sorted
- Calendar Widget - the one with customizable amount of entries
- Faster Application Manager - cause it is really faster
- Conboy for notes
- Witter for checking Twitter on the move
- X-Chat for IRC talks
- Hermes for populating contacts with extra data
- Currency converter - usable on travels
- Erminig to load Google Calendar data into Calendar - not perfect tool but works
- fMMS - cause I sometimes get MMS or want to send such
- Garnet VM - Metro under PalmOS is awesome
- Mappero + Maep - cause Ovi Maps are useless for in-city walking navigation
- MyTube to show YT videos (ZouTube is a joke compared to MyTube)
- Powatool, Ses, Tweakr for changing few extra things in system
- cpumem applet to see how overloaded my phone is
- SiB + MPlayer to watch some movies
- Tracker cfg to tell which directories I do not want to see in Media Player (I use SiB with them)
- Transition control to kill all those "smooth" crap
- WifiEye to check how bad wifi can be
- Merge duplicated contacts plugin

To avoid:
- Zoutube - MyTube is better
- Twitter integration into Contacts - easiest way to duplicate contacts