You and me both! I went to IMDB just now. I was certain he had recently died. Looks like I got him mixed up with Maxmillian Schell, who passed away this past February.
I was thinking of the “archival footage” of Laurence Olivier in Sky Captain and the World of Tomorrow (2004)
http://www.imdb.com/title/tt0346156/?ref_=nv_sr_2
I was unaware that Alec Guinness was still alive at the time they finally completed Mute Witness (1994).
http://www.imdb.com/title/tt0110604/?ref_=nm_flmg_act_2