Varies highs for me coming over from Windows and trying Linux for the first time with my shiny new N800 back in Nov 2008.
I remember muddling through alot of things until I found ITT. MY favourite moments in no particular order
1)Dual booting OS2008 off mmc
2)Writing first script
3)Getting the "Sick feeling" when thought tablet was bricked for first time only to spring back to life after my first successful os flash
4)NITDroid
5)Writing my first "Hello World"
But the biggest high and plus point for maemo has and always will be this community where ever Nokia leads us.