This is what I started testing. I like Bob and Shackles, other options are War Monk, Nimble Mongoose, EE. Sower isn't doing much more than pitching to Force so I might explore other options there.

3 Tropical Island
3 Tundra
3 Underground Sea
4 Flooded Strand
4 Misty Rainforest
2 Island
1 Forest

4 Dark Confidant
4 Tarmogoyf
2 Sower of Temptation
2 Vendilion Clique

4 Brainstorm
4 Force of Will
4 Swords to Plowshares
3 Daze
1 Krosan Grip
2 Ponder
4 Counterbalance
4 Sensei's Divining Top
2 Vedalken Shackles

Sideboard
2 Krosan Grip
4 Leyline of the Void
3 Engineered Plague
3 Hydroblast
1 Blue Elemental Blast
2 Duress

nice mana base

Here is my list:

4 Sensei's Top
4 Ponder
4 Brainstorm
4 Swords to Plowshares
2 Spell Snare

4 Counterbalance
4 Tarmogoyf
2 Jotun Grunt

3 Trinket Mage
1 Explosives
1 Chalice
1 Tormod's Crypt
1 Elspeth
4 Force of Will

1 Academy Ruins
1 Seat of the Synod
2 Island
1 Forest
3 Tundra
4 Tropical Island
4 Misty Rainforest
4 Other Blue Fetch
1 Volcanic Island

Sideboard
1 Pithing Needle
1 Sunbeam Spellbomb
1 Explosives
1 Chalice
2 Tormod's Crypt
3 Hydroblast
2 Sower of Temptation
2 Knight of the Reliquary
3 Wall of Blossoms

-AA

What are the following good against:

Jotun Grunt
Chalice
Elspeth
Explosives for 5
Wall of Blossoms
Knight of the Reliquary

Some of your sideboard/metagame slots seem to be in the no-man's land between power and versatility, if you get what I mean.

I've been told Bob might not be great since there are apparently a lot of aggro decks. In that case something like this might be good:

4 Tropical Island
4 Tundra
2 Volcanic Island
2 Island
4 Misty Rainforest
4 Flooded Strand

4 Tarmogoyf
4 Rhox War Monk

1 Elspeth, Knight-Errant
1 Ajani Vengeant
4 Force of Will
4 Daze
4 Brainstorm
4 Sensei's Divining Top
4 Counterbalance
3 Firespout
4 Swords to Plowshares
3 Repeal

Sideboard:
1 Firespout
3 Hydroblast
3 Pyroblast
3 Relic of Progenitus
3 Krosan Grip
2 Engineered Explosives

I think I'd cut the clunky planeswalkers and Repeals for Vendilions or some disruption, but I like the idea of War Monk/Spout.