Do you remember the Mobira Talkman? No? That's okay, you may not have been born yet. In 1984 this was what all the sierra hotel financial traders had glued to their faces -- and clutched to their hips, since the thing was as big as a briefcase. 25 years later skilled modder Jani 'Japala' Pönkkö came across a free (and fully-functional) example and set upon completing his dream of turning it into an HTPC, which he has called the Dataman. Inside he managed to pack an Intel T5500
Core 2 Duo processor, 1GB of DDR2 memory, a 32GB SSD, and a wireless network card. The 40-hour mod is laboriously detailed in photos at the read link, while the fruits of all that labor are shown in videos after the break, the first showing the pre-mod phone still working perfectly -- but complaining about the lack of network (like the Russian Empire's rule of Finland, the NMT network is long gone) -- and the second showing that green LCD replaced by a rather more colorful OLED one.
[Via The UberReview