1. all commandline utilities display version in --help output, but they also display some date.
1.6.5, for example,displays "3 April 2009" - looks like release date of 1.6.4.
maybe date should be automatically set when performing 'make dist' ?
trunk currently displays "18 September 2008".

2. zabbix_get has slightly misleading output in --help :
"ZABBIX get - Communicate with ZABBIX agent v1.6.5 (3 April 2009)"

it implies that zabbix_get can only communicate with zabbix agent of the specified version, when it actually is version of zabbix_get utility.
instead, line should be like :
"ZABBIX get v1.6.5 - Communicate with ZABBIX agent (3 April 2009)"
(with a more correct date as well).

note, trunk also prints revision number, and that number should follow version number.