Thanks, I have been reading the forum for a while now but never felt the urge to register. Until I finally wanting to leave a word for your post
Anyway, it seems that you are going to stay in Taipei for a while. From your photos, I think you haven't been to Maokong and Yingge, and I would recommend these two spots.
Maokong (
http://en.wikipedia.org/wiki/Maokong and
http://wikitravel.org/en/Taipei/Wenshan) can easily take up a day if you like to hike. Taipei Zoo is also there, so you can take a walk inside it (they now have pandas

) and then after the tour, take the Gondola to the top of the Maokong mountain and then hike there. When it's near night time, you can then find a tea house facing Taipei city, have dinner, tea, and enjoy the night scene (if the weather is good). On the Maokong mountain, there is one famous temple called 樟山寺 where it has one of the best view (see
http://travel.network.com.tw/tourguide/point/showpage/103056.html, but unfortunately the information there is in chinese).
Yingge (
http://wikitravel.org/en/Yingge) on the other hand is famous for pottery. If you like pottery, or you want to buy some nice souvenir, this little town definitely worth your time. They have some very nice pottery, at quite reasonable price (you might need to bargain a bit, to get really good price, or go with a local friend).
Oh definitely don't forget to try the hot spring, given it's so cold in Taipei now. I believe your local colleague will be able to recommend a few good places to go to; if not, try Wulai (
http://wikitravel.org/en/Wulai) and Beitou (
http://wikitravel.org/en/Taipei/Beitou).
Have a nice stay in Taipei.