I remember being able to swap librams during casts to get their different effects.
I remember Blessing of Light.
I remember reck-bombs.
I remember Consecration being the 31 point Holy talent.
I remember standing in the doorway to Vael's room in BWL, buffing everyone with pally power and then quickly running into position so as to not waste the 5 minute buffs. And I remember the first day greater blessings came out when I got a whisper from a paladin in different guild going "I just buffed the whole raid in a matter of seconds!"