The "jackdaws" pangram originated with the OpenType fonts that replaced TrueType, which used the traditional "quick brown fox" pangram.
Mac OS X fonts use "Five quacking zephyrs jolt my wax bed."
Adobe InDesign fonts use "Sphinx of black quartz, judge my vow."
The Beagle Bros and Space Shuttle font samples use "Pack my box with five dozen liquor jugs."
The Scribus font sample used "Woven silk pyjamas exchanged for blue quartz."
Macintosh post-System 7 and Palm fonts used "Cozy lummox gives smart squid who asks for job pen."
Macintosh System 7 fonts use "How razorback-jumping frogs can level six piqued gymnasts!"
Linux KDE fonts use "Ill-healthy cellist-feuilletonist Ciqo from Zagreb was being cold in a poor garage."
Google Web Font Directory uses "Grumpy wizards make toxic brew for the evil Queen and Jack."
This prompts dochermes to reflect:
And the old pulp writers like Lester Dent or Norvell Page could bang out an exciting story using most of those as springboards.
(The whole conversation probably dates the hell out of everyone involved.)