My ideal "outside the box" class combo is one of the two below:

Bloodstorm Blade - Good melee and range abilities, and with certain feats, you can disarm, trip, etc at range. You also can keep melee functionality.

Gish variant of the above. Duskblade 13/Warblade 1/Bloodstorm Blade 4/XX 2

This lets you imbue a Vampiric Touch into your weapon, full attack whatever you like, and get the benefit of the spell on all of them.

For XX, if you want better end game power, you can build thusly:

Wizard 1/Duskblade 13/Warblade 1/BSB 4/Warblade 2

Take precocious apprentice for Wraithstrike and practiced spellcaster, and you get a full attack, touch attack, once a day, with a spell added in.

Not the best combo in existence, but it's fun.