I'm requesting to write a Golbat analysis. It's quite awesome with Evo Stone and can IMHO find a teamspot countering the many fighters.. He can take +1 Robuushin Stone Edge, Haze the +1 off and roost off the damage. That's pretty awesome (even given most Robuushin carry Payback now...)
EDIT: I was informed I should bring a solid argument. So, solid argument coming up.
It's playstyle should be stall, in any kind, as its 80/65 attack stats just aren't going to get it anywhere near sweeping. In stall, Evostone is obligatory, as it's otherwise outclassed by Crobat, having a lower stat at every single stat. With evostone, Golbat reaches 75/105/112,5 base stats, giving it potential for both physical and special walling. It's special typing is unlucky (weaknesses to Electric, Ice and Psychic ruin its walling potential), so it mainly should be used as a physical wall. It works really well in this, walling pretty much all fighting types, and toxic-stalling the opponent without any problems.
Let me give some calcs to back me up, assuming a 252/252+ spread on golbat:
252att Adamant Breloom's Focus punch: 15,5%-18.3%
252att Adamant Roobushin's Stone edge: 58,4%- 68,9%.
252att Adamant Roobushin's Drain Punch: 9,9%-11,4%
252att Adamant Roobushin's Payback: 29,2%- 34,5%
This means he can switch in on Roobushin, and rooststall out ANY move. Since he's faster anyhow, Stone Edge will only hit super effectively once, and needs to crit on that hit, or on 2 consecutive hits or it won't kill it at all. This is all coming from a 140(!) base stat, with a 100 base power Neutral move in Payback, and a 100 base power super effective move in Stone Edge. Given these calcs, I don't think any of you doubt the physical wall power of Golbat, given that Robuushin is IIRC one of the highest attack base stat pokemon.. But then, let's take a powerful special attacker, with 252/4 in Hp/SpD from Golbat, with Defboosting nature.
252SpA Naive Salamence Draco Meteor: 62,7% - 74%.
252SpA Naive Salamence Outrage: 50,3% - 59,3%
Take a look at those numbers again.
If you have Golbat in, and a Salamence comes in, you can safely stay in and roost. That is pretty awesome. even if it dragon dances up, you can haze it, and survive the blow!
As you see at the Draco Meteor, this thing is a mammoth, even on the special side without SpD investment - something many other phyisical walls (I'm looking at you, Skarmory) can't boast.
Any of you need more argument?