The Final Reflection
is the one I seem to go back to most often. Other ones that I have read multiple times areThe Wounded Sky, My Enemy, My Ally, Strangers From the Sky
and Prime Directive
There are certainly newer ones that I would like
to reread, but have sadly never made the time: Serpents Among the Ruins, Articles of the Federation
, A Stitch in Time
, the Destiny
Trilogy, Watching The Clock, The Never-Ending Sacrifice
... well, the list goes on, really...
In non-Trek, probably my most reread is the Hitch-Hiker's Guide to the Galaxy "trilogy". I'm actually sort of in the middle of going through that one again now!